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This study examines HMB-45 and HLA class I antigen expression in cryopreserved Ma-Mel-100b metastasis. The red-stained positive cells and B2M gene deletion localization are analyzed in detail.
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A B HMB-45 60 65 | | L L K N G E R I tta ctgaag aat gga gag aga att 2m (aa) B2M (nt) deleted in Ma-Mel-100b HLA class I Supplementary Fig. S6: A, Analysis of HMB-45 (melanoma cells) and HLA class I antigen expression in serial sections from cryopreserved metastasis Ma-Mel-100b. Positive cells stain red. B, Localization of the 12 bp deletion in the B2M gene of Ma-Mel-100b cells. Capital letters (upper line) indicate the 2m amino acid sequence (aa), small letters (lower line) the nucleotide sequence of the corresponding B2M gene region (nt). Numbers indicate the aa position within the protein sequence.