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.
Head of the state 1 embryo in right (A) and left (B) lateral views. Scale bar = 1 mm. Abbreviations: anp, anterior neuropore; mdp, mandibular process; mnp, medial nasal process; msc, mesencephalon; mxp, maxillary process; of, optic (choroid) fissure; *, pharyngeal cleft.
