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) Ultrasonographic image of Day 48 of gestation. The image shows an enlarged mammary gland with heterogeneous echotexture with smooth margins. The foetal structures are visible in the gestational sac, which is surrounded by amniotic fluid. This image is of the sagittal plain of the foetus. (B) 60 days of gestation, a radiographic image shows at least six foetuses in the uterus and the enlargement of multiple mammary glands.
