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.
ptc-3(ok121) causes recessive embryonic lethality. (A) Nomarski DIC micrograph of ptc-3 late-stage embryos prior to hatching. (B) The embryo shown in panel (A), right, was photographed immediately after hatching when it developed extensive vacuolation and died. Scale bars, 20 μm.
