title: [The assimilation by Eimeria tenella coccidia of DNA and RNA precursors from the host cell].
abstract: The assimilation of purine and pyrimidine bases, their nucleosides and orotic acid from the host cell by coccidian E. tenella was studied by means of radioactive precursors of DNA and RNA. It has been established that within their development and reproduction the parasites use selectively different precursors of DNA and RNA from the host cell. Coccidians use intensively the purine base 14C-adenine, assimilate negligibly the pyrimidine base 14C-uracil and nucleoside 14C-uridine and do not use at all 14C-thymidine and 14C-thymine. The coccidians were found to assimilate most intensively 14C-orotic acid, the lower precursor of pyrimidine bases.
mesh_terms: D000818:Animals; D002250:Carbon Radioisotopes; D002645:Chickens / Q000469:parasitology; D016054:DNA, Protozoan / Q000096:biosynthesis*; D016786:Eimeria tenella / Q000378:metabolism*; D006790:Host-Parasite Interactions; D009694:Nucleic Acid Precursors / Q000378:metabolism*; D009963:Orotic Acid / Q000378:metabolism; D011684:Purine Nucleosides / Q000378:metabolism; D011685:Purine Nucleotides / Q000378:metabolism; D011741:Pyrimidine Nucleosides / Q000378:metabolism; D011742:Pyrimidine Nucleotides / Q000378:metabolism; D016053:RNA, Protozoan / Q000096:biosynthesis*
chemical_list: D002250:Carbon Radioisotopes; D016054:DNA, Protozoan; D009694:Nucleic Acid Precursors; D011684:Purine Nucleosides; D011685:Purine Nucleotides; D011741:Pyrimidine Nucleosides; D011742:Pyrimidine Nucleotides; D016053:RNA, Protozoan; D009963:Orotic Acid
vernacular_title: Assimiliatsiia koktsidiiami Eimeria tenella predshestvennikov DNK i RNK iz kletki khoziaina.