tokens: Immunohistochemical staining was positive for S-100 in all 9 cases stained , positive for HMB-45 in 9 ( 90 % ) of 10 , and negative for cytokeratin in all 9 cases in which myxoid melanoma remained in the block after previous sections .
folded_tokens: immunohistochemical staining be positive for s-100 in all 9 case stain , positive for hmb-45 in 9 ( 90 % ) of 10 , and negative for cytokeratin in all 9 case in which myxoid melanoma remain in the block after previous section .