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.
Mean (%) ± SD of PM (progressive motile), NP (non-progressive motile), and IM (immotile) of post-prep test wash samples prior to freezing and post-thawed samples cryopreserved by the 6 different protocols; different letters between groups indicate statistically significant differences at p < 0.05
