S100 belongs to the family of calcium binding proteins such as calmodulin and troponin C. The S100 Protein Cocktail antibody stains melanocytes, schwannomas, peripheral neural tissue, astrocytes, benign and malignant melanomas and their metastases. S100 protein is also expressed in the antigen presenting cells such as the Langerhan’s cells in skin and interdigitating reticulum cells […]
S100 belongs to the family of calcium binding proteins such as calmodulin and troponin C. The S100 antibody stains Schwannomas, ependymomas, astrogliomas, almost all benign and malignant melanomas and their metastases. S100 protein is also expressed in the antigen presenting cells such as the Langerhan’s cells in skin and interdigitating reticulum cells in the paracortex […]
Nerve Growth Factor Receptor antibody (NGFR) is a useful immunohistochemical marker, when used in conjunction with the S100 antibody, to aid in the diagnosis of desmoplastic and neurotrophic malignant melanomas, which are often negative for other melanocytic markers (HMB45, MART-1/Melan-A). Studies have shown that NGFR is expressed on Schwann cells, neuronal axons and perineural cells, […]
Microphthalmia Transcription Factor antibody (MiTF) is a nuclear melanocytic marker. Studies have shown it is a sensitive and specific marker for malignant melanoma, including some spindle-cell variants. MiTF has been shown to have superior sensitivity and specificity to S100 and HMB45. MiTF may be useful for identification of melanoma, melanocytic soft tissue tumors and the […]
The MART-1/Melan A recognizes a protein of 18 kDa, identified as MART-1 (Melanoma Antigen Recognized by T cells 1) or Melan-A. The MART-1 recognizes a subcellular fraction found in melanosomes. The antibody labels melanomas and tumors showing melanocytic differentiation. It does not mark neoplasms of epithelial origin, lymphomas or mesenchymal tumors. MART-1 is a useful […]
The HMB45 clone reacts with a neuraminidase-sensitive oligosaccharide side chain of a glycoconjugate present in immature melanosomes. Studies have shown the HMB45-reactive antigen is present in cutaneous melanocytes, prenatal and infantile retinal pigment epithelium and melanoma cells. It is also thought to be oncofetal in nature.15 The MART-1/Melan A recognizes a protein of 18kDa, identified […]
HMB45 reacts with a neuraminidase-sensitive oligosaccharide side chain of a glycoconjugate present in immature melanosomes. The HMB45-reactive antigen is present in cutaneous melanocytes, prenatal and infantile retinal pigment epithelium (RPE), and melanoma cells and is thought to be oncofetal in nature. This antibody has been shown to label the majority of melanomas.15
The DOG1 (M) [DOG1.1] antibody is a mouse monoclonal antibody raised for the detection of DOG1, a cell surface protein of unknown function that is selectively expressed in gastrointestinal stromal tumors (GIST). DOG1 expression has been reported to be a highly sensitive and specific marker for GIST in formalin-fixed, paraffin-embedded tissue.15 Studies have demonstrated that […]
CD31 recognizes a 100kDA glycoprotein in endothelial cells and 130kD in platelets. It reacts weakly with mantle zone B-cells, peripheral T-cells, and neutrophils.15 CD31 can detect vascular endothelium associated antigen and has been used as a marker for benign and malignant human vascular disorders, myeloid leukemia infiltrates and megakaryocytes in normal bone marrow.15-17 CD31 can […]
