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.
A–F. Lateral, ventral and section views of embryos stained for Twist (brown) and Even skipped (blue) from wild type (A, C and E), and Df(2L)ed-dp males crossed to C(2)v females (B, D and F) showing the severe delay in ventral furrow formation in the latter embryos.
