Test Details: Immunohistochemical testing is carried out on biopsy/resected tissue specimen. This testing helps to identify specific antigens (proteins) within tissue sections utilizing an antigen-specific antibody .Myogenin is a transcriptional factors that participates in the activation of muscle stem cells and take a part in the regulation of skeletal muscle differentiation in early embryonal stages, maintenance of myogenic program, and repair. Expression of this is specific for all rhabdomyosarcoma types.