[Influence of the number of inoculated parasites on the in vitro infestation of HeLa cells by the coccidia Besnoitia jellisoni Frenkel].
The influence of the number of bradyzoites of the Coccidia Besnoitia inoculated in the culture medium of HeLa cells on their penetration rate was investigated. The intracellular penetration rate increased with the "size of inoculum", then seemed constant when a certain density is reached. Important densities of bradyzoites in the inoculum led to an unequal distribution of intracellular parasites among the cellular sheet. Multiple infective units in a same host cell did not occur randomly. It seems that some cells are more suitable than others to parasite invasion.
D000818:Animals; D016782:Apicomplexa / Q000254:growth & development*; D006367:HeLa Cells / Q000166:cytology / Q000469:parasitology*; D006790:Host-Parasite Interactions; D006801:Humans; D007700:Kinetics; D051381:Rats
Influence du nombre de parasites inoculés sur l'infestation in vitro de cellules HeLa par la coccidie Besnoitia jellisoni Frenkel.