Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The 5th division of an SDS-treated embryo with an intermediate cleavage pattern. (a) A 16-cell stage embryo with 2 micromeres and 2 equalized cells. (b) Nuclear membrane breakdown for 5th cleavage occurs earlier in the equalized cells than in the micromeres. (c) The 32-cell stage. The 2 small micromeres (SMi) are the last to undergo nuclear membrane breakdown for 6th cleavage (arrowheads).
