( a ) positive reactivity in formalin-fixed and paraffin-processed specimens , ( b ) identification of cytoplasmic antigen ( s ) in melanoma cells , ( c ) negative reactivity with normal epidermal melanocytes on paraffin-sections , and ( d ) intense reaction with amelanotic melanoma cells , particularly in superficial spreading and acral lentiginous melanoma and in metastatic lymph nodes .
C1513095
melanoma cells
C0346037
acral lentiginous melanoma