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Tyrosinase [T311 + OCA1/812]
Description Tyrosinase is a key enzyme involved in the initial stages of melanin biosynthesis. Tyrosinase catalyzes the hydroxylation of tyrosine to 3,4-dihydroxyphenylalanine (DOPA). Oxidation reactions of DOPA to L-Dopaquinone and 5,6-dihydroxyindole (DHI) to indole-quinone occur spontaneously at physiological pH. Tyrosinase is expressed in melanin-producing cells such as melanocytes, which are primarily localized in the skin, hair bulbs and eyes. Low levels of tyrosinase mRNA was also detected in the human substantia nigra, but immunohistochemically unreactive. Since melanomas arise from melanocytes, there is evidence that tyrosinase is expressed in malignant melanomas. Studies have shown that tyrosinase is a sensitive and reliable marker to assess melanocytic lesions in paraffin-embedded tissue (Shipping Cost: €200.00) Host Mouse Application Flow cytometry (FC), Immunofluorescence (IF), Immunohistochemistry (IHC) Reactivity Human -
Uroplakin III [EPR14420]
Description Uroplakins (UPs) are a family of transmembrane proteins (UPs Ia, Ib, II and III) that are specific differentiation products of urothelial cells. In non-neoplastic mammalian urothelium, UPs are expressed in the luminal surface plasmalemma of superficial (umbrella) cells, forming complexes of 16 nm crystalline particles. Moll et al. reported that UPIII was detectable immunohistochemically in 29 of 55 primary (53%) and 23 of 35 metastatic (66%) urothelial carcinomas, whereas many non- urothelial carcinomas were UPIII-negative. The authors concluded that anti-UPIII should be a valuable marker, especially for the specific identification of urothelial carcinomas in patients with metastases of unknown primary site. Subsequently, Olsburgh et al. studied UP gene expression in normal urothelium and bladder cancer specimens, and found that expression was absent after malignant transformation. Ohtsuka et al. concluded in their studies that UPIII expression was strongly associated with lower tumor Host Rabbit Application Flow cytometry (FC), Immunohistochemistry (IHC) Reactivity Human -
Uroplakin III [EPR14420]
Description Uroplakins (UPs) are a family of transmembrane proteins (UPs Ia, Ib, II and III) that are specific differentiation products of urothelial cells. In non-neoplastic mammalian urothelium, UPs are expressed in the luminal surface plasmalemma of superficial (umbrella) cells, forming complexes of 16 nm crystalline particles. Moll et al. reported that UPIII was detectable immunohistochemically in 29 of 55 primary (53%) and 23 of 35 metastatic (66%) urothelial carcinomas, whereas many non- urothelial carcinomas were UPIII-negative. The authors concluded that anti-UPIII should be a valuable marker, especially for the specific identification of urothelial carcinomas in patients with metastases of unknown primary site. Subsequently, Olsburgh et al. studied UP gene expression in normal urothelium and bladder cancer specimens, and found that expression was absent after malignant transformation. Ohtsuka et al. concluded in their studies that UPIII expression was strongly associated with lower tumor Host Rabbit Application Flow cytometry (FC), Immunohistochemistry (IHC) Reactivity Human -
Villin [VIL1/1314]
Description Villin is a 95 kD glycoprotein of microvilli associated with rootlet formation in gastrointestinal mucosal epithelium. Anti-villin labels the brush border area in the gastrointestinal mucosal epithelium. This antibody has been useful in differentiating gastrointestinal adenocarcinoma, neuroendocrine carcinomas, and ovarian adenocarcinomas from adenocarcinomas of other organs. This antibody also labels Merkel cells of the skin. (Shipping Cost: €200.00) Host Mouse Application Flow cytometry (FC), Immunofluorescence (IF), Immunohistochemistry (IHC), Western Blot (WB) Reactivity Human -
Villin [VIL1/1314]
Description Villin is a 95 kD glycoprotein of microvilli associated with rootlet formation in gastrointestinal mucosal epithelium. Anti-villin labels the brush border area in the gastrointestinal mucosal epithelium. This antibody has been useful in differentiating gastrointestinal adenocarcinoma, neuroendocrine carcinomas, and ovarian adenocarcinomas from adenocarcinomas of other organs. This antibody also labels Merkel cells of the skin. (Shipping Cost: €200.00) Host Mouse Application Flow cytometry (FC), Immunofluorescence (IF), Immunohistochemistry (IHC), Western Blot (WB) Reactivity Human -
Vimentin [LN-6]
Description Anti-vimentin is of limited value as a diagnostic tool; however, when used in combination with other antibodies (in panels) it is useful for the subclassification of a given tumor. Expression of vimentin, when used in conjunction with anti-keratin, is helpful when distinguishing melanomas from undifferentiated carcinomas and large cell lymphomas. All melanomas and Schwannomas react strongly with anti-vimentin. This antibody recognizes a 57 kD intermediate filament. It labels a variety of mesenchymal cells, including melanocytes, lymphocytes, endothelial cells, and fibroblasts. Non-reactivity of anti-vimentin is often considered more useful than its positive reactivity, since there are a few tumors that do not contain vimentin, e.g. hepatoma and seminoma. Anti-vimentin is also useful as a tissue process control reagent. (Shipping Cost: €200.00) Host Mouse Application Flow cytometry (FC), Immunocytochemistry (ICC),Immunofluorescence (IF), Immunohistochemistry (IHC) Reactivity Human, Cat, Bovine,Pig (Porcine), Rat, Rabbit, Mouse, Sheep -
Vimentin [LN-6]
Description Anti-vimentin is of limited value as a diagnostic tool; however, when used in combination with other antibodies (in panels) it is useful for the subclassification of a given tumor. Expression of vimentin, when used in conjunction with anti-keratin, is helpful when distinguishing melanomas from undifferentiated carcinomas and large cell lymphomas. All melanomas and Schwannomas react strongly with anti-vimentin. This antibody recognizes a 57 kD intermediate filament. It labels a variety of mesenchymal cells, including melanocytes, lymphocytes, endothelial cells, and fibroblasts. Non-reactivity of anti-vimentin is often considered more useful than its positive reactivity, since there are a few tumors that do not contain vimentin, e.g. hepatoma and seminoma. Anti-vimentin is also useful as a tissue process control reagent. (Shipping Cost: €200.00) Host Mouse Application Flow cytometry (FC), Immunocytochemistry (ICC),Immunofluorescence (IF), Immunohistochemistry (IHC) Reactivity Human, Cat, Bovine,Pig (Porcine), Rat, Rabbit, Mouse, Sheep -
Wilms' Tumor (WT1) [6F-H2]
Description Recognizes a 47-55kDa-tumor suppressor protein, identified as Wilm's Tumor (WT1) protein. The antibody reacts with all isoforms of the full-length WT1 and also identifies WT1 lacking exon 2-encoded amino acids, frequently found in subsets of sporadic Wilm’s tumor, a sporadic and familial pediatric kidney tumor, is genetically heterogeneous. Wilm’s tumor is associated with mutations of WT1, a zinc-finger transcription factor that is essential for the development of the metanephric kidney and the urogenital system. The WT1 gene is normally expressed in fetal kidney and mesothelium, and its expression has been suggested as a marker for Wilm’s tumor and mesothelioma. WT1 protein has been identified in proliferative mesothelial cells, malignant mesothelioma, ovarian carcinoma, gonadoblastoma, nephroblastoma, and desmoplastic small round cell tumor. Lung adenocarcinomas rarely stain positive with this antibody. WT1 protein expression in mesothelial cells has become a reliable marker for the Host Mouse Application Flow cytometry (FC), Immunocytochemistry (ICC),Immunofluorescence (IF), Immunohistochemistry (IHC) Reactivity Human, Mouse, Rat -
Wilms' Tumor (WT1) [6F-H2]
Description Recognizes a 47-55kDa-tumor suppressor protein, identified as Wilm's Tumor (WT1) protein. The antibody reacts with all isoforms of the full-length WT1 and also identifies WT1 lacking exon 2-encoded amino acids, frequently found in subsets of sporadic Wilm’s tumor, a sporadic and familial pediatric kidney tumor, is genetically heterogeneous. Wilm’s tumor is associated with mutations of WT1, a zinc-finger transcription factor that is essential for the development of the metanephric kidney and the urogenital system. The WT1 gene is normally expressed in fetal kidney and mesothelium, and its expression has been suggested as a marker for Wilm’s tumor and mesothelioma. WT1 protein has been identified in proliferative mesothelial cells, malignant mesothelioma, ovarian carcinoma, gonadoblastoma, nephroblastoma, and desmoplastic small round cell tumor. Lung adenocarcinomas rarely stain positive with this antibody. WT1 protein expression in mesothelial cells has become a reliable marker for the Host Mouse Application Flow cytometry (FC), Immunocytochemistry (ICC),Immunofluorescence (IF), Immunohistochemistry (IHC) Reactivity Human, Mouse, Rat -
ZAP70 [2F3.2]
Description ZAP-70 is a 70 kD protein tyrosine kinase found in T-cells and natural killer cells. Control of this protein translation is via the IgVH gene. ZAP-70 protein is expressed in leukemic cells of approximately 25% of chronic lymphocytic leukemia (CLL) cases as well. Anti-ZAP-70 expression is an excellent surrogate marker for the distinction between the Ig-mutated (anti-ZAP-70 negative) and Ig-unmutated (anti-ZAP-70 positive) CLL subtypes and can identify patient groups with divergent clinical courses. The anti-ZAP-70 positive Ig-unmutated CLL cases have been shown to have a poorer prognosis. (Shipping Cost: €200.00) Host Mouse Application Flow cytometry (FC), Immunocytochemistry (ICC),Immunofluorescence (IF), Immunohistochemistry (IHC) Reactivity Human