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PROGRESS IN PROTOZOOLOGY

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* 1<br />

^MBBHBBHBBBBI jgf'-<br />

Fig. 5. Tangentional sectio n through the surface of an exocytotically normal<br />

Paramecium tetraurelia cell (strain 7S) after performance of a Ca 2 +-ATPase<br />

reaction. Only the trichocyst attachment sites are positive; numbers 1-7 indicate<br />

different sectioning levels (6 and 7 being negative because of being cut at too<br />

low a level). 39 000X. From Plattner et al. (1980)<br />

http://rcin.org.pl

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