Nassophorea: Nassophoria: Peniculida: Parameciidae
Micronuclear process during conjugation
by A. Yanagi
Diagram showing micronuclear process during conjugation in P. caudatum, by A. Yanagi
Figure showing time course of micronuclear events during conjugation
in P. caudatum; by A. Yanagi
Metapase of the first meiotic division
P. caudatum; conjugating pairs; A, metapase of the first meiotic division;
B, the first meiotic division; C, the stage just before nuclear exchange;
living cells observed by differential-interference-contrast microscopy;
by A. Yanagi
P. caudatum; conjugating pair at metapase of the first meiotic division;
A, normal; B, abnormal pycnosis induced by vinblastine; double-stained
by Feulgen reaction and Fast green; by A. Yanagi
Second meiotic division
P. caudatum; conjugating pair at the second meiotic division; A, normal;
B, round-shaped micronuclei induced by vinblastine; living cells observed
by differential-interference-contrast microscopy; by A. Yanagi
Second meiotic division to the stage of nuclear exchange
P. caudatum; conjugating pairs from the second meiotic division to
the stage of nuclear exchange; living cells observed by
phase-contrast microscopy; by A. Yanagi
P. caudatum; conjugating pairs from the second meiotic division to the
stage of nuclear exchange; stained by Feulgen reaction; by A. Yanagi
Just before nuclear exchange
P. caudatum; conjugating pair at the stage just before nuclear exchange;
A, normal; B, abnormal pycnosis induced by vinblastine; double-stained
by Feulgen reaction and Fast green; by A. Yanagi
Nuclear exchange
P. caudatum; conjugating pairs at the stage of nuclear exchange; A,
living pair observed by differential-interference-contrast microscopy;
B, stained by Feulgen reaction; by A. Yanagi
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