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The Morphology and Method of Division of Trichomonas

  • Ann Bishop (a1)

1. Three trichomonads have been cultivated and studied, T. hominis, Trichomonas sp. from M. nemestrinus (= R.T. strain), and T. batrachorum from English frogs and toads.

2. A number of strains of T. batrachorum were cultivated over periods varying from two weeks to five months without the appearance of a Eutrichomastix stage.

3. The division process of T. batrachorum has been studied. The new basal fibre arises as an outgrowth from the blepharoplast. The old axostyle is absorbed and new ones are formed from the daughter blepharoplast during the telophase. Six chromosomes appear during the prophase. Spindle fibres do not appear. There is a separation of the daughter blepharoplasts into centro-some and basal granule at the metaphase.

4. Division of T. hominis and Trichomonas sp. from M. nemestrinus is essentially similar to that of T. batrachorum. The number of chromosomes appeared to be five or six. Double individuals were found in the cultures, and in T. hominis individuals containing four or six sets of organellae. Their significance is obscure.

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J. M. Andrews (1925). Morphology and mitosis in Trichomonas termopsidis, an intestinal flagellate of the termite Termopsis. Biol. Bull. Wood's Hole. 49, 69.

J. M. Andrews (1926). Cultivation of Trichomonas, thermal death point, anaerobic conditions, attempts at sterilisation. J. Parasit. Urbana. 12, 148.

H. P. Barret and N. M. Smith (1926). The cultivation of Endamoeba ranarum. Ann. Trop. Med. Parasitol. 20, 85.

E. R. Becker (1926). The flagellate fauna of the caecum of the striped ground squirrel, Citellus tridecemlineatus, with special reference to Chilomastix magna sp. nov. Biol. Bull. Wood's Hole. 51, 287.

H. M. Fox (1921). An investigation into the cause of the spontaneous aggregations of flagellates and into the reactions of flagellates to dissolved oxygen. J. Gen. Physiol. 3, 483.

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C. A. Kofoid and O. Swezy (1915). Mitosis and multiple fission in trichomonad flagellates. Proc. Amer. Acad. Arts and Sci. 51, 287.

K. M. Lynch (1922). Cultivation of Trichomonas and the question of differentiation of the flagellates. J. Amer. Med. Ass. 79, 1130.

D. L. Mackinnon (1910). New protist parasites from the intestine of Trichoptera. Parasitol. 3, 246.

T. Ohira and H. Noouchi (1917). The cultivation of the Trichomonas of the human mouth. (Tetratrichomonas hominis). J. Exp. Med. 25, 341.

M. Tanabe (1925). The cultivation of trichomonas from man, cat and owl. J. Parasitol. Urbana. 12, 101.

M. Tanabe (1925 a). A study of Trichomonas from the guinea-pig. J. Parasitol. Urbana. 11, 170.

M. Tanabe (1926). Morphological studies on Trichomonas. J. Parasitol. Urbana. 12, 120.

D. H. Wenrich (1921). The structure and division of Trichomonas muris (Hartmann). J. Morph. 36, 119.

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  • ISSN: 0031-1820
  • EISSN: 1469-8161
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