{"product_id":"bek1052","title":"Human ErbB-2 ELISA Kit","description":"\u003cstrong\u003eApplication:\u003c\/strong\u003e For quantitative detection of ErbB-2 in human serum, plasma, body fluids,tissue lysates or cell culture supernates.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eIntroduction:\u003c\/strong\u003e ErbB-2 also known as HER2 (human Epidermal Growth Factor Receptor 2), Neu, CD340 or p185, is a 185-kD glycoprotein with tyrosine kinase activity, and it is a member of the epidermal growth factor receptor (EGFR\/ErbB) family. ErbB-2 is encoded by ERBB2, a known proto-oncogene located at the long arm of human chromosome 17(17q21-q22). ErbB-2 was named for its similarity to ERBB (avian erythroblastosis oncogene B). The ErbB family is composed of four plasma membrane-bound receptor tyrosine kinases. Unlike the other family members, ErbB-2 is considered to be an orphan receptor as it has no known ligand. Overexpression of ERBB2 and ERBB3 has been implicated in the neoplastic transformation of prostate cancer.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePrinciple of the Assay:\u003c\/strong\u003e This kit was based on sandwich enzyme-linked immune-sorbent assay technology. Anti-ErbB-2 polyclonal antibody was pre-coated onto 96-well plates. And the biotin conjugated anti-ErbB-2 polyclonal antibody was used as detection antibodies. The standards, test samples and biotin conjugated detection antibody were added to the wells subsequently, and wash with wash buffer. Avidin-Biotin-Peroxidase Complex was added and unbound conjugates were washed away with wash buffer. TMB substrates were used to visualize HRP enzymatic reaction. TMB was catalyzed by HRP to produce a blue color product that changed into yellow after adding acidic stop solution. The density of yellow is proportional to the ErbB-2 amount of sample captured in plate. Read the O.D. absorbance at 450nm in a microplate reader, and then the concentration of ErbB-2 can be calculated.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eStorage and Expiration:\u003c\/strong\u003e Store at 2-8℃ for 6 months, or at -20℃ for 12 months.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eRange:\u003c\/strong\u003e 62.5 pg\/ml - 4000 pg\/ml\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSensitivity:\u003c\/strong\u003e \u0026lt; 10 pg\/ml","brand":"Biospes","offers":[{"title":"96T","offer_id":50409018032408,"sku":"BEK1052","price":500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/5652\/1400\/files\/Biospes-logo_e4226bc0-b203-4e00-9e29-69116ca9179a.jpg?v=1750988337","url":"https:\/\/danabiosci.com\/products\/bek1052","provider":"Dana Bioscience","version":"1.0","type":"link"}