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Home >> Antibodies >> Lewis A (Blood Group Antigen)

Lewis A (Blood Group Antigen)

Mouse Monoclonal Antibody [Clone SPM522]

Catalog #

Size

20 ug
100 ug
100 ug

Price (USD)

199.00
429.00
429.00

Formulation

Purified Ab with BSA and Azide at 200ug/ml
Purified Ab with BSA and Azide at 200ug/ml
Purified Ab WITHOUT BSA and Azide at 1.0mg/ml

Catalog No

Size

20 ug
100 ug
100 ug

Formulation

Purified Ab with BSA and Azide at 200ug/ml
Purified Ab with BSA and Azide at 200ug/ml
Purified Ab WITHOUT BSA and Azide at 1.0mg/ml

Price (USD)

199.00
429.00
429.00
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Formalin-fixed, paraffin-embedded human Colon Carcinoma stained with Lewis A Monoclonal Antibody (SPM522).

Product Details

Synonyms

Lewis A antigen

Positive Control

Colon tissue.

Known Applications & Suggested Dilutions

Flow Cyt, IF, IHC-P         More Details

Flow Cytometry (1-2ug/million cells)
Immunofluorescence (1-2ug/ml)
Immunohistochemistry (Formalin-fixed) (1-2ug/ml for 30 minutes at RT)(Staining of formalin-fixed tissues requires heating tissue sections in 10mM Tris with 1mM EDTA, pH 9.0, for 45 min at 95°C followed by cooling at RT for 20 minutes)
Optimal dilution for a specific application should be determined.

Immunogen

Mucins isolated from ovarian cyst fluid

Cellular Localization

Cell membrane, cytoplasmic and extracellular

Species Reactivity

Human. Mouse.

Host / Ig Isotype

Mouse / IgG1, kappa

Mol. Weight of Antigen

Multiple

Specificity & Comments

Recognizes a carbohydrate determinant of Gal 1-3(Fuc 1-4) GlcNAc which is blood group antigen Lewis A. It is present primarily on epithelial cells such as colon and kidneys. In the tumors and dedifferentiated tissues, decrease of Lewis A antigen was observed. Lewis A (type 1 chain) is expressed in colonic epithelial cells and may be useful for detection of gastrointestinal tumors, pancreatic cancer, and colorectal tumors. Blood group related antigens represent a group of carbohydrate determinants carried on both glycolipids and glycoproteins. They are usually mucin-type, and are detected on erythrocytes, certain epithelial cells, and in secretions of certain individuals. Sixteen genetically and biosynthetically distinct but inter-related specificities belong to this group of antigens, including A, B, H, Lewis A, Lewis B, Lewis X, Lewis Y, and precursor type 1 chain antigens.

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200ug/ml of Ab Purified from Bioreactor Concentrate by Protein A/G. Prepared in 10mM PBS with 0.05% BSA & 0.05% azide. Also available WITHOUT BSA & azide at 1.0mg/ml.

Key References

  1. Gastroenterology, 102 (2), 424-430 (1992).
  2. Blood transfusion and immunohaematology, Ph. Rouger, D Anstee and Ch. Salmon (Eds). Arnette, France 30 (5): 353-720 (1987).
  3. Cancer Epidemiology, Biomarkers Prevention 1, 199-205 (1992).

Bioinformatics

NBT00311