title: The continuous passage of agents of trachoma in cell culture. I. Characteristics of TW-3 and Bour strains of trachoma cultivated in serial passage in HeLa 229 cells.
mesh_terms: D000818:Animals; D002689:Chlamydia / Q000472:pathogenicity*; D000882:Haplorhini; D006367:HeLa Cells; D006801:Humans; D007181:Inclusion Bodies, Viral; D051379:Mice; D014776:Virus Cultivation