a real sperm bank.

In sperm banks, donors are ranked by identity and health checks, and sperm collection methods vary depending on the rank. Excellent donors are taken oral by female collectors in sterile rooms, and their sperm is frozen at minus 196 degrees under the strict control of LEVEL4. In addition, the sperm research plant uses a biomicroscope to check the health of female researchers after collecting sperm by hand. The researchers used women to test the implantation of sperm and eggs.