[Immunocytologic study of light cell lines established in vitro from Ewing's sarcoma. Identification of neural markers].

Using immunocytological techniques, neuroectodermal markers were identified on Ewing's sarcoma cell lines established in vitro and carrying the chromosomal translocation t(11;22). Eight cell lines were tested using a panel of monoclonal antibodies. The presence of cell surface antigens recognized by HNK-1 antibody was confirmed. The cells showed also positive reactions using antibodies directed against Neuron-Specific-Enolase and neurofilament proteins. The presence of these neural markers in the Ewing's sarcoma cells tested is an additional argument substantiating the putative neural origin of this tumor.