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. 2007 Dec 26;2(12):e1352. doi: 10.1371/journal.pone.0001352

Figure 2. (A) Arrest of cytoplasmic streaming in P. bursaria by pressure (10-second intervals).

Figure 2

P. bursaria at interphase arresting cytoplasmic streaming under pressure. Ma and Cv indicate macronucleus and contractile vacuole (broken lines), respectively. Scale bar, 20 µm. (B) Cytoplasmic streaming-dependent increase of the number of endosymbionts. A bar graph shows the number of endosymbionts (±S.D.) under pressure or non-pressure (control). The control value is the number of endosymbionts at intephase (stage 1) described in Fig. 1B. * means a statistical difference P<0.02.