Effects of 3-month exposure to space environment on the epididymal sperm number in wild type (WT) and transgenic (TG) mice.

<p>Mean±SEM. n = 1 in GC and SF, and 3 in LC of WT, and n = 2 in GC and SF, and 3 in LC of TG mice, respectively. LC: laboratory vivarium control, GC: ground control housed in mouse drawer system on the ground, and SF: spaceflight group.