In a sperm bank, donors are ranked according to their identity and health checks, and sperm collection methods differ depending on the rank. Excellent donors are orally collected by a female collector in a sterile room, and the sperm is frozen and stored at minus 196 degrees under strict LEVEL4 control. In addition, at the sperm research plant, the health condition is checked with a biomicroscope after the sperm is collected by a female researcher's handjob. Sperm and egg implantation experiments are being conducted using female researchers. [*The image may not be clear due to bleeding or blurring]
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