title: Activation of leukemia viruses by graft-versus-host and mixed-lymphocyte-culture reactions: electron microscopic evidence of C-type particles.
mesh_terms: D000818:Animals; D003588:Cytopathogenic Effect, Viral; D006087:Graft vs Host Reaction; D009052:Leukemia Virus, Murine / Q000302:isolation & purification*; D007959:Lymphocyte Culture Test, Mixed; D051379:Mice; D008854:Microscopy, Electron; D012190:Retroviridae / Q000302:isolation & purification*; D013154:Spleen / Q000276:immunology / Q000382:microbiology