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) PC1 vs. PC2 score plot. Green circles: blastocysts in vitro (n= 13); red diamonds: blastocysts in vivo (n= 8). (b) PC1 vs. PC2 loading plot labeled in terms of m/z ratio (green: negative ion mode; violet: positive ion mode).
