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334M-8

Sigma-Aldrich

Cytokeratin (34betaE12) Mouse Monoclonal Antibody

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NACRES:
NA.41

biological source

mouse

Quality Level

100
500

conjugate

unconjugated

antibody form

culture supernatant

antibody product type

primary antibodies

clone

34betaE12, monoclonal

description

For In Vitro Diagnostic Use in Select Regions (See Chart)

form

buffered aqueous solution

species reactivity

human

packaging

vial of 0.1 mL concentrate (334M-84)
vial of 0.5 mL concentrate (334M-85)
bottle of 1.0 mL predilute (334M-87)
vial of 1.0 mL concentrate (334M-86)
bottle of 7.0 mL predilute (334M-88)

manufacturer/tradename

Cell Marque

technique(s)

immunohistochemistry (formalin-fixed, paraffin-embedded sections): 1:100-1:500

isotype

IgG1κ

control

prostate

shipped in

wet ice

storage temp.

2-8°C

visualization

cytoplasmic

Gene Information

human ... KRT1(3848)

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This Item
335M-9301M-1314M-1
conjugate

unconjugated

conjugate

unconjugated

conjugate

unconjugated

conjugate

unconjugated

species reactivity

human

species reactivity

human

species reactivity

human

species reactivity

human

clone

34betaE12, monoclonal

clone

35betaH11, monoclonal

clone

AE1, monoclonal

clone

LL002, monoclonal

antibody form

culture supernatant

antibody form

culture supernatant

antibody form

culture supernatant

antibody form

ascites fluid

Gene Information

human ... KRT1(3848)

Gene Information

human ... KRT1(3848)

Gene Information

human ... KRT1(3848)

Gene Information

human ... KRT14(3861)

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General description

Anti-Cytokeratin, 34betaE12 is an antibody to high molecular weight cytokeratin that reacts with all squamous and ductal epithelium and stains carcinomas. This antibody recognizes cytokeratins 1,5,10, and 14 that are found in complex epithelia. Anti-Cytokeratin, 34betaE12 shows no reactivity with hepatocytes, pancreatic acinar cells, proximal renal tubules, or endometrial glands; there has been no reactivity with cells derived from simple epithelia. Mesenchymal tumors, lymphomas, melanomas, and neural tumors are unreactive with this antibody with some exceptions. Anti-Cytokeratin, 34betaE12 does label myoepithelial cells and has been shown to be useful in distinguishing prostatic adenocarcinoma from hyperplasia of the prostate. This antibody has also been useful in separating benign from malignant intraductal breast proliferations.

Quality


IVD

IVD

IVD

RUO

Linkage

Cytokeratin (34betaE12) Positive Control Slides , Product No. 334S, are available for immunohistochemistry (formalin-fixed, paraffin-embedded sections).

Physical form

Solution in Tris Buffer, pH 7.3-7.7, with 1% BSA and <0.1% Sodium Azide

Preparation Note

Download the IFU specific to your product lot and formatNote: This requires a keycode which can be found on your packaging or product label.

Other Notes

For Technical Service please contact: 800-665-7284 or email: service@cellmarque.com

Legal Information

Cell Marque is a trademark of Merck KGaA, Darmstadt, Germany

Certificates of Analysis (COA)

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X J Yang et al.
The American journal of surgical pathology, 23(2), 147-152 (1999-02-16)
Immunohistochemistry with antibodies for high-molecular-weight cytokeratin labels basal cells and is used as an ancillary study in diagnosing prostate carcinoma, which reportedly lacks expression of high-molecular-weight cytokeratin. A recent report questioned the specificity of this marker, describing immunopositivity for high-molecular-weight
F Moinfar et al.
The American journal of surgical pathology, 23(9), 1048-1058 (1999-09-09)
A variety of studies have investigated the role of low molecular weight (LMW) and high molecular weight (HMW) cytokeratin (CK) expression in the normal breast and invasive breast carcinomas. A few studies with small numbers of cases have addressed this
K J Wojno et al.
The American journal of surgical pathology, 19(3), 251-260 (1995-03-01)
Basal cell-specific anti-cytokeratin antibody (34 beta E12) decorates the basal cells of benign prostatic epithelium by standard immunohistochemical techniques, whereas adenocarcinoma of the prostate lacks immunoreactivity with this antibody. We reviewed our experience with this antibody to determine its utility
M B Amin et al.
Archives of pathology & laboratory medicine, 118(3), 260-264 (1994-03-01)
Histologic review of 48 radical prostatectomy specimens containing both prostatic adenocarcinoma (PC) and high-grade prostatic intraepithelial neoplasia (PIN) resulted in 23 cases containing neoplastic cribriform gland (CGs) at the periphery or within PC fields. The histologic characteristics of CG PIN
A M Gown et al.
The American journal of pathology, 114(2), 309-321 (1984-02-01)
Monoclonal antibodies generated against different human intermediate filament (IF) proteins were assayed on fixed, embedded tissue by the biotin-avidin-immunoperoxidase method for evaluation of the tissue specificity of these antibodies. An antibody (43 beta E8) made to fibroblast IF protein stains

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