• Choose a colour
  • The Occurrence of Pneumocystis carinii in Mice in England.

    Author(s) : PORTER, Annie

    Journal article : Parasitology 1916 Vol.8 No.3 pp.255-259 pp. ref.8 text-figs

    Abstract : The author summarises the history of small pulmonary cysts in mammals and mentions their confusion with stages of the life-cycle of certain trypanosomes. Pneumocysts have been found in rabbits, dogs, cats, lambs, goats, rats, and possibly man. The parasite is now described from a healthy wild mouse accidentally killed in Cambridge. The lung cysts were spherical or oval bodies 4µ to 5µ in diameter when young, and 5µ to 6.5µ when mature. At first they were uninucleate, but older cysts showed two, four or eight nuclei. Eight vermicular merozoitcs were produced, each with a single nucleus, and measuring 1.5µ to 2.5µ by 0.5µ. These stages are illustrated by text figures. The probable mode of transmission is contaminative, such as by means of the oral or nasal secretions. The mouse was not parasitized by trypanosomes, leucocytogregarines or coccidia. The author's conclusions are: - " Pneumocystis carinii has been found in the lungs of a mouse in England. The cysts are spherical or oval and are 4µ to 6.5µ in diameter; eight merozoitcs are finally formed within them. The organism appears to be an independent parasite of the lungs of certain vertebrates, and to be unconnected with any trypanosome." H. B. F.

    ISSN : 0031-1820

    DOI : 10.1017/S0031182000010581

    Record Number : 19162901040

    Language of text : not specified

    Language of summary : not specified