Abstract

Antibody-producing clones were obtained by hybridization of spleen cells from mice immunized with whole cultured human tumor cells and mouse myeloma cells, P3UX59AG8. The tumor cells were derived from a peripheral primitive neuroectodermal tumor. One of the antibodies produced by these clones reacts with the original cell line, SK-PN-DW, and other more differentiated neuroectodermal tumors such as neuroblastomas and melanomas. The cell line SK-PN-DW contains antigenic determinants recognized by monoclonal antibodies raised against melanoma, neuroblastoma, and human fetal brain. These data indicate that this primitive neuroectodermal tumor is derived from the neuroectoderm.

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