title: ALTERATION IN VIRULENCE OF RIFT VALLEY FEVER VIRUS DURING SERIAL PASSAGE IN LAMB TESTIS CELLS.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D001103:Arboviruses; D001921:Brain; D006801:Humans; D008099:Liver; D008297:Male; D051379:Mice; D010336:Pathology; D012106:Research; D012296:Rift Valley fever virus; D012692:Serial Passage; D012756:Sheep; D034561:Sheep, Domestic; D013737:Testis; D046509:Tissue Culture Techniques; D014774:Virulence; D014776:Virus Cultivation
keywords: ANIMALS, NEWBORN; ARBOVIRUS; BRAIN; EXPERIMENTAL LAB STUDY; LIVER; MICE; PATHOLOGY; SHEEP; TESTIS; TISSUE CULTURE; VIRULENCE; VIRUS CULTIVATION