Absence of erythrocyte forms of Theileria annulata in calves inoculated with schizonts from a virulent field strain grown in tissue culture
Pipano, E.; Israel, V., 1971: Absence of erythrocyte forms of Theileria annulata in calves inoculated with schizonts from a virulent field strain grown in tissue culture. Journal of Protozoology 18(Supplement): 37
Calves inoculated with schizonts from 10th to 35th passage of Th. annulata in tissue culture showed clinical symptoms of the disease; schizonts were seen in liver smears, and erythrocytic forms of the organism in blood films. Calves inoculated with schizonts from 50th to 120th passages did not show any clinical symptoms nor were stages of the parasite seen in liver and blood films.