vimentin and actin in 35 casses of myogenic tumors ofvarious types was analyzed by immunohistochemical technique
The results show thatthe expression of desmin in malignant myogenic tumor cells is weakened
and some ofthem can be negative for desmin but positive for vimentin or coexpress both of desminand vimentin. It is closely related to poorly-differentiation or undifferentiation ofmalignant tumor cells.The intermediate filament expression in vascular leiomyomasexhibits three different types. Actin(Alpha-Sr-1)reveals stronger staining for em-bryonal rhabdomyosarcoma.