Fig 6.
20th day of pregnancy: ultrasound longitudinal section of the uterus. The gestational chamber (C) presents the classic lemon shape; inside, some parts of the fetal teguments are barely visible.
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.