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Fig. 2. Effect of Ca2+ concentration on sperm motility in hypertonic
conditions. (A) FWT and (B) SWT sperm. Squares, hypertonic solution containing
200 mmol l-1 NaCl; diamonds, 250 mmol l-1 NaCl (500 mOsm
kg-1); triangles, 350 mmol l-1 NaCl (700 mOsm
kg-1); circles, 500 mOsm kg-1 (1000 mOsm
kg-1). Values are means ± S.D.; N=150
sperm from 5 fish for each for each point.