total cellular rnas from a variety of fresh and culture-derived human hematopoietic neoplastic cell types at various stages of differentiation and human sarcoma , carcinoma , melanoma , and glioblastoma cell lines were enriched for poly ( a ) - containing sequences , fractionated by gel electrophoresis , and blot hybridized to a cloned dna probe containing the transforming sequences ( v-amv ) of avian myeloblastosis virus ( amv ) , a virus known to cause myeloid leukemias in chickens .
C0007634
cellular
C0007589
differentiation