title: Corrections and clarifications.
abstract: Figure 3 on page 253 of the report "Block of Ca(2+) wave and Ca(2+) oscillation by antibody to the inositol 1,4,5-trisphosphate receptor in fertilized hamster eggs" by Si. Miyazaki et al. (10 July, p. 251) was printed so that the sperm drawn on the computer display were not visible. Also, the scale bar for (F), which was 50 microm, was not clear. The correct figure is reproduced below. [See figure in the PDF file].