Abbkine Reagents
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Normal Human Serum | BMS0060
$111.94 - $687.25Normal Human Serum | BMS0060 from Abbkine.Product Overwiew:High quality Normal human serum processed from non-immunized normal adult humans is used as a blocking agent or as a negative control for immunoassays. Background:Normal human serums, which are...794-BMS0060$111.94 - $687.25 -
BAPTA, AM | BMD00085
$541.29 - $3,499.99BAPTA, AM | BMD00085 from Abbkine.Product Overwiew:BAPTA and its derivatives are calcium chelators that are commonly used to form calcium buffers with well-defined calcium concentrations.Background:BAPTA and its derivatives are calcium chelators that are...794-BMD00085$541.29 - $3,499.99 -
DiOC6(3) | BMD00081
$191.30 - $911.13DiOC6(3) | BMD00081 from Abbkine.Product Overwiew:DiOC6(3) is a lipophilic fluorescent dye with excitation/emission spectra of 484/501 nm, respectively.Background:3, 3'-Dihexyloxacarbocyanine (DiOC6(3)) is a lipophilic fluorescent dye with...794-BMD00081$191.30 - $911.13 -
DiOC5(3) | BMD00080
$171.46 - $870.04DiOC5(3) | BMD00080 from Abbkine.Product Overwiew:DiOC5(3) is a probe for measuring membrane potential and localization of endoplasmic reticulum.Background:3, 3'-Dipentyloxacarbocyanine is a probe for measuring membrane potential and localization of...794-BMD00080$171.46 - $870.04 -
DiOC2(3) | BMD00079
$171.46 - $870.04DiOC2(3) | BMD00079 from Abbkine.Product Overwiew:DiOC2(3) has been used for measuring membrane potentials in bacteria. Background:DiOC2(3) (3, 3′-Diethyloxacarbocyanine, iodide) has been used for measuring membrane potentials in bacteria. The green...794-BMD00079$171.46 - $870.04 -
RH795 | BMD00078
$684.41 - $4,609.50RH795 | BMD00078 from Abbkine.Product Overwiew:RH795 is a fast-responding potentiometric probe that is primarily used for functional imaging of neurons. Background:The styryl dye RH795 is a fast-responding potentiometric probe that is primarily used for...794-BMD00078$684.41 - $4,609.50 -
RH237 | BMD00077
$520.04 - $3,478.74RH237 | BMD00077 from Abbkine.Product Overwiew:RH237 is a fast-responding potentiometric probe that is primarily used for functional imaging of neurons.Background:The styryl dye RH237 is a fast-responding potentiometric probe that is primarily used for...794-BMD00077$520.04 - $3,478.74 -
RH421 | BMD00076
$212.55 - $1,198.78RH421 | BMD00076 from Abbkine.Product Overwiew:RH421 is a fast responding membrane potential dyeBackground:RH421 is a fast responding membrane potential dye, exhibiting >20% fluorescence change per 100 mV on neuroblastoma cells.Used for:N/AKit...794-BMD00076$212.55 - $1,198.78 -
RH414 | BMD00075
$684.41 - $4,609.50RH414 | BMD00075 from Abbkine.Product Overwiew:RH414 is a fast-responding potentiometric probe that is primarily used for functional imaging of neurons.Background:The styryl dye RH414 is a fast-responding potentiometric probe that is primarily used for...794-BMD00075$684.41 - $4,609.50 -
DiR (DiIC18(7)) | BMD00074
$171.46DiR (DiIC18(7)) | BMD00074 from Abbkine.Product Overwiew:DiR is a lipophilic, near-infrared fluorescent cyanine dye.Background:DiR is a lipophilic, near-infrared fluorescent cyanine dye. The dye is useful for labeling cytoplasmic membrane. The two long...794-BMD00074$171.46 -
DiD (DiIC18(5)) | BMD00073
$191.30DiD (DiIC18(5)) | BMD00073 from Abbkine.Product Overwiew:The far-red fluorescent, lipophilic carbocyanine DiD is a longer-wavelength DiI analog.Background:The far-red fluorescent, lipophilic carbocyanine DiD is a longer-wavelength DiI analog. It is an...794-BMD00073$191.30 -
DiO(DiOC18(3)) | BMD00072
$212.55DiO(DiOC18(3)) | BMD00072 from Abbkine.Product Overwiew:The green fluorescent, lipophilic carbocyanine DiOC18(3) is widely used as a lipophilic tracer.Background:The green fluorescent, lipophilic carbocyanine DiOC18(3) is widely used as a lipophilic...794-BMD00072$212.55 -
DiI (DiIC18(3)) | BMD00071
$191.30DiI (DiIC18(3)) | BMD00071 from Abbkine.Product Overwiew:DiI is a widely used carbocyanine membrane dye.Background:DiI is a widely used carbocyanine membrane dye that labels cell membranes by inserting its two long (C18 carbon) hydrocarbon chains into...794-BMD00071$191.30 -
6-CDCFDA SE | BMD00070
$212.55 - $1,198.786-CDCFDA SE | BMD00070 from Abbkine.Product Overwiew:6-CDCFD is a useful fluorescent tracer that can passively diffuse into cells.Background:6-CDCFD is a useful fluorescent tracer that can passively diffuse into cells and covalently label intracellular...794-BMD00070$212.55 - $1,198.78 -
6-CDCFDA | BMD00069
$212.55 - $1,198.786-CDCFDA | BMD00069 from Abbkine.Product Overwiew:6-CDCFD is a useful fluorescent tracer that can passively diffuse into cells.Background:6-CDCFD is a useful fluorescent tracer that can passively diffuse into cells and covalently label intracellular...794-BMD00069$212.55 - $1,198.78 -
6-CFDA | BMD00068
$171.46 - $787.856-CFDA | BMD00068 from Abbkine.Product Overwiew:6-CFDA has been used to differentiate viable cells from apoptotic cells.Background:6-CFDA has been used to differentiate viable cells from apoptotic cells. Live cells that are not apoptotic accumulate...794-BMD00068$171.46 - $787.85 -
5-CFDA | BMD00067
$171.46 - $787.855-CFDA | BMD00067 from Abbkine.Product Overwiew:5-CFDA is membrane-permeant and can be loaded into cells via incubation.Background:5-CFDA is membrane-permeant and thus can be loaded into cells via incubation. Once inside cells, 5-CFDA is hydrolyzed by...794-BMD00067$171.46 - $787.85 -
5(6)-CFDA, SE | BMD00066
$191.30 - $972.065(6)-CFDA, SE | BMD00066 from Abbkine.Product Overwiew:5(6)-CFDA is a useful fluorescent tracer that can passively diffuse into cells.Background:5(6)-CFDA, SE (full name: 5-(and-6)-Carboxyfluorescein diacetate, succinimidyl ester, also known as CFSE) is...794-BMD00066$191.30 - $972.06 -
5(6)-CFDA | BMD00065
$212.55 - $1,198.785(6)-CFDA | BMD00065 from Abbkine.Product Overwiew:5(6)-CFDA can be loaded into cells via incubation. Background:5(6)-CFDA (full name: 5-(and-6)-Carboxyfluorescein diacetate) is membrane-permeant and thus can be loaded into cells via incubation. Once...794-BMD00065$212.55 - $1,198.78 -
Calcein AM | BMD00064
$643.32 - $4,321.85Calcein AM | BMD00064 from Abbkine.Product Overwiew:Calcein AM is a cell-permeable dye.Background:Calcein AM is a cell-permeable dye that, upon entering live cells, is cleaved by intracellular esterases, leaving membrane-impermeant calcein, a fluorescent...794-BMD00064$643.32 - $4,321.85 -
DAPI | BMD00063
$314.57 - $1,815.18DAPI | BMD00063 from Abbkine.Product Overwiew:DAPI is a popular blue fluorescent DNA dye.Background:DAPI is a popular blue fluorescent DNA dye. The dye binds to the minor groove of dsDNA with approximately 20-fold fluorescence enhancement. DAPI is often...794-BMD00063$314.57 - $1,815.18 -
Hoechst 33342 | BMD00062
$150.20 - $643.32Hoechst 33342 | BMD00062 from Abbkine.Product Overwiew:Hoechst dyes are cell membrane-permeant, minor groove-binding blue fluorescent DNA stains.Background:Hoechst dyes are cell membrane-permeant, minor groove-binding blue fluorescent DNA stains. Hoechst...794-BMD00062$150.20 - $643.32 -
Hoechst 33258 | BMD00061
$130.36 - $582.39Hoechst 33258 | BMD00061 from Abbkine.Product Overwiew:Hoechst dyes are cell membrane-permeant, minor groove-binding blue fluorescent DNA stains.Background:Hoechst dyes are cell membrane-permeant, minor groove-binding blue fluorescent DNA stains. Hoechst...794-BMD00061$130.36 - $582.39 -
Ethidium Homodimer-1 (EthD-1) | BMD00060
$664.57 - $4,486.22Ethidium Homodimer-1 (EthD-1) | BMD00060 from Abbkine.Product Overwiew:Ethidium Homodimer, is a high affinity fluorescent nucleic acid stain. Background:Ethidium Homodimer, is a high affinity fluorescent nucleic acid stain. It binds to both DNA and RNA...794-BMD00060$664.57 - $4,486.22 -
FITC (ISOMER I) | BMD00059
$171.46 - $787.85FITC (ISOMER I) | BMD00059 from Abbkine.Product Overwiew:FITC is an amine-reactive fluorescein derivative.Background:FITC (fluorescein-5-isothiocyanate) is an amine-reactive fluorescein derivative for labeling proteins or other molecules containing...794-BMD00059$171.46 - $787.85 -
Biotin-X SE | BMD00058
$150.20 - $582.39Biotin-X SE | BMD00058 from Abbkine.Product Overwiew:Biotin-X, SE activates the carboxylic acid group of Biotin, which promotes the coupling reactions.Background:Biotin-X, SE activates the carboxylic acid group of Biotin, which promotes the coupling...794-BMD00058$150.20 - $582.39 -
Biotin-X, free acid | BMD00057
$191.30 - $911.13Biotin-X, free acid | BMD00057 from Abbkine.Product Overwiew:Biotin-X, free acid can be used for biosynthesis of biotinylated oligosaccharides.Background:Biotin-x, free acid can be used for biosynthesis of biotinylated oligosaccharides and also commonly...794-BMD00057$191.30 - $911.13 -
Biotin-XX, SE | BMD00056
$150.20 - $643.32Biotin-XX, SE | BMD00056 from Abbkine.Product Overwiew:Biotin-XX succinimidyl ester is readily coupled to a primary or secondary amine under mild conditions.Background:Biotin-XX succinimidyl ester (6-((6-((Biotinoyl)amino)hexanoyl)amino)hexanoic acid...794-BMD00056$150.20 - $643.32 -
Biotin-XX | BMD00055
$212.55 - $1,095.34Biotin-XX | BMD00055 from Abbkine.Product Overwiew:Biotin-XX free acid can be used to react with aromatic amines or sterically hindered amines.Background:Biotin-XX free acid (6-((6-((Biotinoyl)amino)hexanoyl)amino)hexanoic acid) can be easily converted...794-BMD00055$212.55 - $1,095.34 -
Biotin Azide | BMD00054
$294.74 - $1,793.92Biotin Azide | BMD00054 from Abbkine.Product Overwiew:Biotin azide reacts with alkyne to form 1, 2, 3-triazole by copper(I) catalyzed 1, 3-dipolar Huisgen cycloaddition.Background:Biotin azide reacts with alkyne to form 1, 2, 3-triazole by copper(I)...794-BMD00054$294.74 - $1,793.92 -
Biotin SE | BMD00053
$212.55 - $1,198.78Biotin SE | BMD00053 from Abbkine.Product Overwiew:Biotin SE can easily react with primary or secondary amine.Background:Biotin SE can easily react with primary or secondary amine under mild conditions, commonly used to modify proteins and other...794-BMD00053$212.55 - $1,198.78 -
Cy5 SE | BMD00052
$828.95 - $5,738.85Cy5 SE | BMD00052 from Abbkine.Product Overwiew:Cy5, SE is a red near infrared fluorescent dye.Background:Cyanine dye Cy5, SE is a red near infrared fluorescent dye, which has low background, high fluorescence intensity and good stability. Cy5 is often...794-BMD00052$828.95 - $5,738.85 -
Cy5 | BMD00051
$993.32 - $7,012.73Cy5 | BMD00051 from Abbkine.Product Overwiew:Cy5 is a red near infrared fluorescent dye.Background:Cyanine dye Cy5 is a red near infrared fluorescent dye, which has low background, high fluorescence intensity and good stability. Cy5 is often used in...794-BMD00051$993.32 - $7,012.73 -
Cy3 | BMD00050
$993.32 - $7,012.73Cy3 | BMD00050 from Abbkine.Product Overwiew:Cy3 dye is a bright, orange-fluorescent dye.Background:Cy3 dye is a bright, orange-fluorescent dye that can be excited using the 532 nm laser line and visualized with TRITC (tetramethylrhodamine) filter sets...794-BMD00050$993.32 - $7,012.73 -
Rhodamine 110 | BMD00049
$191.30 - $952.22Rhodamine 110 | BMD00049 from Abbkine.Product Overwiew:Rhodamine 110 is the precursor for a variety of R110-based enzyme substrates.Background:Rhodamine 110 (R110) is the precursor for a variety of R110-based enzyme substrates. It is also used as a...794-BMD00049$191.30 - $952.22 -
6-X-FAM | BMD00048
$520.04 - $3,478.746-X-FAM | BMD00048 from Abbkine.Product Overwiew:6-X-FAM connect an amino acetyl group in FAM (referred to as the "X").Background:6-X-FAM connect an amino acetyl group in FAM (referred to as the "X"). The join of "X" group increases the space of the...794-BMD00048$520.04 - $3,478.74 -
6-FAM, succinimidyl ester | BMD00047
$294.74 - $1,774.086-FAM, succinimidyl ester | BMD00047 from Abbkine.Product Overwiew:6-FAM, SE is the amine-reactive succinimidyl ester of single isomer 6-FAM acid.Background:6-FAM, SE is the amine-reactive succinimidyl ester of single isomer 6-FAM acid. It is one of the...794-BMD00047$294.74 - $1,774.08 -
6-FAM | BMD00046
$150.20 - $643.326-FAM | BMD00046 from Abbkine.Product Overwiew:6-FAM is mainly used in sequencing of nucleic acids and labeling nucleotides.Background:6-FAM is another isomer of carboxyfluorescein. It is mainly used in sequencing of nucleic acids and labeling...794-BMD00046$150.20 - $643.32 -
5-FAM-PEO12, succinimidyl ester | BMD00045
$459.11 - $3,047.975-FAM-PEO12, succinimidyl ester | BMD00045 from Abbkine.Product Overwiew:5-FAM-PEO12 SE has an approximately 47 Angstrom water-soluble PEG spacer that separates fluorescein and the amine-reactive SE group.Background:5-FAM-PEO12 SE (full name:...794-BMD00045$459.11 - $3,047.97 -
5-FAM-PEO8, succinimidyl ester | BMD00044
$459.11 - $3,047.975-FAM-PEO8, succinimidyl ester | BMD00044 from Abbkine.Product Overwiew:5-FAM-PEO8 SE has an approximately 32 Angstrom water-soluble PEG spacer that separates fluorescein and the amine-reactive SE group.Background:5-FAM-PEO8 SE (full name:...794-BMD00044$459.11 - $3,047.97 -
5-FAM, succinimidyl ester | BMD00043
$314.57 - $1,938.465-FAM, succinimidyl ester | BMD00043 from Abbkine.Product Overwiew:5-FAM, SE is the amine-reactive succinimidyl ester of single isomer 5-FAM acid. Background:5-FAM, SE is the amine-reactive succinimidyl ester of single isomer 5-FAM acid. It is one of the...794-BMD00043$314.57 - $1,938.46 -
5-FAM | BMD00042
$253.64 - $1,424.095-FAM | BMD00042 from Abbkine.Product Overwiew:FAM can be incorporated into liposomes, and allow for the tracking of liposomes.Background:The single isomer, 5-FAM, contains a carboxylic acid that can be used to react with primary amines via carbodiimide...794-BMD00042$253.64 - $1,424.09 -
5(6)-FAM | BMD00041
$171.46 - $870.045(6)-FAM | BMD00041 from Abbkine.Product Overwiew:FAM can be incorporated into liposomes, and allow for the tracking of liposomes.Background:Commercially available FAM is a mixture of two isomers, 5-FAM and 6-FAM, and the correct name is...794-BMD00041$171.46 - $870.04 -
AMCA-X, succinimidyl ester | BMD00040
$418.02 - $2,615.78AMCA-X, succinimidyl ester | BMD00040 from Abbkine.Product Overwiew:Amine reactive, UV excitable blue fluorescent probe similar to AMCA-H.Background:AMCA-X, SE is one of the most popular blue fluorescent tagging molecules. It is widely used to label...794-BMD00040$418.02 - $2,615.78 -
AMCA-X | BMD00039
$253.64 - $1,486.43AMCA-X | BMD00039 from Abbkine.Product Overwiew:Amine reactive, UV excitable blue fluorescent probe similar to AMCA-H.Background:Amine reactive, UV excitable blue fluorescent probe similar to AMCA-H. Activates to form lysine-reactive AMCA-X...794-BMD00039$253.64 - $1,486.43 -
AMCA | BMD00038
$232.39 - $1,341.90AMCA | BMD00038 from Abbkine.Product Overwiew:AMCA is one of the brightest amine-reactive blue fluorescent dyes.Background:AMCA is one of the brightest amine-reactive blue fluorescent dyes useful for immunofluorescence and fluorescent labeling. It is...794-BMD00038$232.39 - $1,341.90 -
6-ROX, succinimidyl ester | BMD00037
$664.57 - $4,445.136-ROX, succinimidyl ester | BMD00037 from Abbkine.Product Overwiew:6-ROX, SE is widely used for oligonucleotide labeling and automated DNA sequencing applications.Background:The isomeric 6-ROX, SE is an amine-reactive form of carboxy-X-rhodamine and is...794-BMD00037$664.57 - $4,445.13 -
6-ROX | BMD00036
$335.83 - $2,061.746-ROX | BMD00036 from Abbkine.Product Overwiew:6-ROX is predominately used for labeling nucleotides and sequencing nucleic acids.Background:6-ROX is predominately used for labeling nucleotides and sequencing nucleic acids.Used for:N/AKit...794-BMD00036$335.83 - $2,061.74 -
5-ROX | BMD00035
$335.83 - $2,061.745-ROX | BMD00035 from Abbkine.Product Overwiew:5-ROX is used for oligonucleotide labeling and automated DNA sequencing applications.Background:The carboxylic acid of 5-ROX is used for oligonucleotide labeling and automated DNA sequencing applications...794-BMD00035$335.83 - $2,061.74 -
5-TAMRA | BMD00034
$335.83 - $2,061.745-TAMRA | BMD00034 from Abbkine.Product Overwiew:Tetramethylrhodamine has been a widely used fluorophore for preparing bioconjugates.Background:Tetramethylrhodamine (TMR, TRITC) has been a widely used fluorophore for preparing bioconjugates, such as...794-BMD00034$335.83 - $2,061.74 -
6-TAMRA, succinimidyl ester | BMD00033
$664.57 - $4,445.136-TAMRA, succinimidyl ester | BMD00033 from Abbkine.Product Overwiew:Tetramethylrhodamine has been a widely used fluorophore for preparing bioconjugates.Background:Tetramethylrhodamine (TMR, TRITC) has been a widely used fluorophore for preparing...794-BMD00033$664.57 - $4,445.13 -
6-TAMRA | BMD00032
$335.83 - $2,061.746-TAMRA | BMD00032 from Abbkine.Product Overwiew:Tetramethylrhodamine has been a widely used fluorophore for preparing bioconjugates.Background:Tetramethylrhodamine (TMR, TRITC) has been a widely used fluorophore for preparing bioconjugates, such as...794-BMD00032$335.83 - $2,061.74 -
5(6)-TAMRA, cadaverine | BMD00031
$437.85 - $2,760.325(6)-TAMRA, cadaverine | BMD00031 from Abbkine.Product Overwiew:Tetramethylrhodamine has been a widely used fluorophore for preparing bioconjugates.Background:5(6)-TAMRA cadaverine is a useful reagent for modifying carboxy groups via EDC-mediated...794-BMD00031$437.85 - $2,760.32 -
5(6)-TAMRA, succinimidyl ester, mixed isomers | BMD00030
$561.13 - $807.695(6)-TAMRA, succinimidyl ester, mixed isomers | BMD00030 from Abbkine.Product Overwiew:Tetramethylrhodamine has been a widely used fluorophore for preparing bioconjugates.Background:5(6)-TAMRA SE (full name: 5-(and-6)-Carboxytetramethylrhodamine...794-BMD00030$561.13 - $807.69 -
5(6)-TAMRA, mixed isomers | BMD00029
$171.46 - $807.695(6)-TAMRA, mixed isomers | BMD00029 from Abbkine.Product Overwiew:Tetramethylrhodamine has been a widely used fluorophore for preparing bioconjugates.Background:Tetramethylrhodamine (TMR, TRITC) has been a widely used fluorophore for preparing...794-BMD00029$171.46 - $807.69 -
MQAE | BMD00008
$253.64 - $1,486.43MQAE | BMD00008 from Abbkine.Product Overwiew:MQAE is an improved chloride indicator that has greater sensitivity to chloride than SPQ (Ksv=118 M-1) and higher fluorescence quantum yield.Background:MQAE (N-(Ethoxycarbonylmethyl)-6-methoxyquinolinium...794-BMD00008$253.64 - $1,486.43 -
BCECF, AM ester | BMD00007
$294.74 - $1,774.08BCECF, AM ester | BMD00007 from Abbkine.Product Overwiew:BCECF, AM ester is membrane-permeant and thus can be loaded into cells via incubation.Background:BCECF, AM ester is membrane-permeant and thus can be loaded into cells via incubation. This product...794-BMD00007$294.74 - $1,774.08 -
Fluo-3, AM ester | BMD00006
$602.23 - $4,054.04Fluo-3, AM ester | BMD00006 from Abbkine.Product Overwiew:Membrane-permeant AM ester form of Fluo-3 that can be loaded into cells via incubation.Background:Membrane-permeant AM ester form of Fluo-3 that can be loaded into cells via incubation. Fluo-3 AM...794-BMD00006$602.23 - $4,054.04 -
BAPTA, tetrasodium salt | BMD00005
$171.46 - $848.78BAPTA, tetrasodium salt | BMD00005 from Abbkine.Product Overwiew:BAPTA and its derivatives are calcium chelators that are commonly used to form calcium buffers with well-defined calcium concentrations.Background:BAPTA and its derivatives are calcium...794-BMD00005$171.46 - $848.78 -
BAPTA, tetrapotassium salt | BMD00004
$171.46 - $848.78BAPTA, tetrapotassium salt | BMD00004 from Abbkine.Product Overwiew:BAPTA and its derivatives are calcium chelators that are commonly used to form calcium buffers with well-defined calcium concentrations.Background:BAPTA and its derivatives are calcium...794-BMD00004$171.46 - $848.78 -
BAPTA, tetracesium salt | BMD00003
$150.20 - $664.57BAPTA, tetracesium salt | BMD00003 from Abbkine.Product Overwiew:BAPTA and its derivatives are calcium chelators that are commonly used to form calcium buffers with well-defined calcium concentrations.Background:BAPTA and its derivatives are calcium...794-BMD00003$150.20 - $664.57 -
D-Luciferin, Sodium Salt | BMD00002
$294.74 - $1,774.08D-Luciferin, Sodium Salt | BMD00002 from Abbkine.Product Overwiew:D-Luciferin sodium salt is a useful substrate for the enzyme Firefly Luciferase.Background:D-Luciferin sodium salt is a useful substrate for the enzyme Firefly Luciferase. Upon oxidation...794-BMD00002$294.74 - $1,774.08 -
Dihydroethidium (Hydroethidine) | BMD00001
$191.30 - $972.06Dihydroethidium (Hydroethidine) | BMD00001 from Abbkine.Product Overwiew:Dihydroethidium (Hydroethidine) is the reduction form of commonly used DNA dye-ethidium bromide.Background:The superoxide indicator dihydroethidium, also called hydroethidine, is...794-BMD00001$191.30 - $972.06 -
Ulp1 (SUMO Protease/Ulp1 peptidase) | PRP3001
$273.48 - $1,691.90Ulp1 (SUMO Protease/Ulp1 peptidase) | PRP3001 from Abbkine.Product Overwiew:Recombinant Yeast Ulp1 protein expressed in E.coli.Background:SUMO (Small Ubiquitin-like MOdifiers) Protease 1 (Ulp1, Ubl-specific protease 1 from Saccharomyces cerevisiae) is a...794-PRP3001$273.48 - $1,691.90