Multiplication of Cowdria ruminantium in monolayer of tick cells.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000382:microbiology*; D002478:Cells, Cultured; D006357:Heartwater Disease / Q000382:microbiology*; D066298:In Vitro Techniques; D012281:Rickettsia / Q000254:growth & development* / Q000302:isolation & purification / Q000472:pathogenicity; D012756:Sheep; D012757:Sheep Diseases / Q000382:microbiology*; D013987:Ticks