Figure 1. Calcium wave. The upper panel shows a bovine sperm with a calcium probe exposed to a high potassium concentration, while the lower panel shows a graphic representation of the fluorescence intensity, both in control conditions and when sperm are exposed to potassium. The figure indicates that there is a wave from the middle piece to the head when the sperm are depolarized. Modified figure from Navarrete et al. 2010.
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