Evidence for transfer of macromolecular RNA between mammalian cells in culture.

Centrifugation, Density Gradient Contact Inhibition Culture Techniques Cytoplasm/metabolism DNA/metabolism Dactinomycin/pharmacology Histocytochemistry Methionine/metabolism Microscopy, Phase-Contrast Mitosis Nucleosides/metabolism Nucleotides/analysis Phagocytosis RNA/antagonists & inhibitors,biosynthesis,metabolism Tantalum Thymidine/metabolism Tritium Uridine/metabolism

Nucleosides Nucleotides Tritium Dactinomycin RNA Tantalum DNA Methionine Thymidine Uridine