Fig. 8. Mitotic Ca²⁺ transients in one-cell embryos do not continue beyond the reformation of the nuclei in the two-cell embryo. Mitotic one-cell embryos were co-injected with fura 2-dextran and FITC-NLS-BSA to simultaneously record Ca²⁺ and reformation of the nuclei. A representative sample is shown (n=13). Note that Ca²⁺ transients are detected prior to the reformation of the nuclei but not after.