The prostate gland secretes a fluid that makes up about of seminal fluid.

The fluid excreted by the prostate makes up about one-third of the total volume of semen and contains various enzymes, zinc and citric acid. Though prostate fluid is slightly acidic, another fluid in semen made by the seminal vesicles leaves semen slightly alkaline, or basic.

Mri or anything that has uv lights

It would be 23 beats per second