title: Defective C-type retrovirus particles secreted by L1210 leukemia cells.
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D003673:Defective Viruses / Q000302:isolation & purification*; D007939:Leukemia L1210 / Q000378:metabolism / Q000382:microbiology*; D012190:Retroviridae / Q000302:isolation & purification* / Q000378:metabolism / Q000648:ultrastructure; D014764:Viral Proteins / Q000378:metabolism
chemical_list: D014764:Viral Proteins