TRICHOMONAS MURIS 



G61 



Fig. 271. — Trichomonas muris of the Mouse, showing Structure of Flagellate 

 AND Method of Division (x 2,000). (After Wenricii, 1921.) 



1. Form showing parabasal body (pale grey streak) after fixation in Flemming'.s osmic acid 



solution. 



2. Form in which parabasal body is not evident after fixation in Schaudinn's fluid. 



3. Commencing division — formation of new basal fibre as fine outgrowth from blepharoplast. 



4. A similar >t,iL;f tn that at 3 — nucleus shows six chromosomes, each with indication of 



douhlcn.ituiv. 



5. The l)l( |ili:ii(.ij|a>ts have divided, and the daughter blepharoplasts are connected by a para- 



dc<ni..M'; til.' iMw lia>.-.l tilnv and new inciiihranc liauclliiiii aiv .(.iinccted with the divided- 

 ol? lil<'|.liai..|.laMs: m\ (•lir..iii.iM mi-s with nn in.licat icni .>t .Imil.lr nature. 



6. Similar ■>taL;c sli-htly nioic advaiK'cd. slniwin;^ (•(miiiK'nciiiM (Icjciicration of axostyle. 



7. The six chromosomes have divided into two groups nf >i\ daii-htcr chromosomes, which show 



indications of a double nature; the axostyle has disapiKMnd. 



8. Nuclear division is complete, and each daughter nutlrus has six chromosomes which again 



appear double; the paradesmose is still present; the axostyle has disappeared. 



9. The nuclei are reconstructed, and daughter axostyles (clear streaks) are growing out from 



the blepharoplasts. 

 10. Outgrowth of new axostyles complete; paradesmose still present. 



