title: Viral etiology of leukemias. Electron-microscope observation of virus-like particles.
mesh_terms: D000818:Animals; D002642:Chick Embryo; D003593:Cytoplasm; D004721:Endoplasmic Reticulum; D005321:Extraembryonic Membranes / Q000473:pathology; D006801:Humans; D006967:Hypersensitivity / Q000209:etiology; D007181:Inclusion Bodies, Viral; D007267:Injections; D007271:Injections, Intradermal; D007938:Leukemia / Q000097:blood / Q000209:etiology* / Q000382:microbiology; D008206:Lymphatic Diseases / Q000209:etiology; D008566:Membranes / Q000473:pathology; D008854:Microscopy, Electron; D014020:Tissue Extracts; D014779:Virus Replication; D014780:Viruses / Q000302:isolation & purification
chemical_list: D014020:Tissue Extracts