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Table 1.

The rate of phagocytosis by macrostomes and microstomes treated with cytochalasin B

Control cellsCytochalasin-B-stimulated cells
Rate of phagocytosis by macrostomes (number of DVs per 30 min) 2.4±0.2 (3) 0±0 (3) 
Rate of phagocytosis by microstomes (number of DVs per 6 min) 3.9±0.1 (3) 0.2±0.2 (3) 
Control cellsCytochalasin-B-stimulated cells
Rate of phagocytosis by macrostomes (number of DVs per 30 min) 2.4±0.2 (3) 0±0 (3) 
Rate of phagocytosis by microstomes (number of DVs per 6 min) 3.9±0.1 (3) 0.2±0.2 (3) 

The rate of phagocytosis was measured as the number of digestive vacuoles(DVs) formed.

In all experiments, the concentration of Tetrahymena thermophilawas 105 cells ml-1.

In each experiment, 100 cells were counted.

Data are expressed as the mean ± S.E.M. (N).

Cytochalasin B concentration was 10 μg ml-1.

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