Figure 3.
Day 3 Embryo grading: Grade 1 (left), Grade 2 (middle), Grade 3 (right).
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.