TY - RPRT TI - Epithelial Phenotype in Ewing's Sarcoma/Primitive Neuroectodermal Tumor. AU - Funda Vakar-López AU - Alberto G. Ayala AU - A. Kevin Raymond AU - Bogdan Czerniak PY - 2000 DO - 10.1177/106689690000800111 UR - https://pubmed.ncbi.nlm.nih.gov/11493965/ ID - 11493965 ER -