Cytoskeletal organization in embryos with altered pHi. Confocal micrographs of 2-cell embryos cultured in either HECM-10 (A, D), HTMA (B, E), or HDMO (C, F) for 6 h, showing the microtubule (A–C) and microfilament (D–F) configurations in these embryos. Scale bar = 50 µm.