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  • Title: Comparative autoradiographic study of parasite-host-cell cyclical relationship in lymphoblastoid cell lines infected with Theileria annulata and Theileria parva in vitro.
    Author: Jura WG, Brown CG, Perry M.
    Journal: Vet Parasitol; 1985 Dec; 18(4):339-48. PubMed ID: 3937319.
    Abstract:
    Cyclical interactions between intracellular schizonts of the Ankara and Hissar strains of Theileria annulata and the Muguga strain of T. parva and the parasitised host lymphoblasts have been studied autoradiographically by following the incorporation of (3H) thymidine into parasite and host cell nuclei, and also by quantitating the number of schizont nuclei per lymphoblast, at various stages and phases of host cell cycle. The synthesis of DNA by Theileria schizonts and the parasitised host lymphoblasts was found to be asynchronous and to occur at different phases of the host cell interphase stage. While the lymphoblast nuclear DNA incorporates (3H) thymidine during the S phase, schizont nuclei were labelled during the G2 phase of the host lymphoblast interphase stage. The replication of schizont nuclei took place before the metaphase stage of host cell cycle, viz, prometaphase, so that the mean schizont nuclear number at host prometaphase and at anaphase--telophase was consistently more or less double the mean nuclear number at interphase.
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