title: Small, virus-like particles detected in bovine sera by electron microscopy.
mesh_terms: D000818:Animals; D001769:Blood / Q000382:microbiology*; D002250:Carbon Radioisotopes; D002417:Cattle / Q000196:embryology*; D002460:Cell Line; D002478:Cells, Cultured; D003470:Culture Media; D007244:Infectious Mononucleosis / Q000378:metabolism / Q000382:microbiology; D008854:Microscopy, Electron; D014316:Tritium; D014461:Ultracentrifugation; D014529:Uridine / Q000378:metabolism; D014780:Viruses / Q000302:isolation & purification*
chemical_list: D002250:Carbon Radioisotopes; D003470:Culture Media; D014316:Tritium; D014529:Uridine