Item#: 991-04S SEMEN Single Donor

Single Donor Semen.
Lee Biosolutions follows all HIPAA guidelines for our donors. 45 CFR Parts 160,162,164.

Contact us for any specific requirements not listed on this page. Lee Biosolutions has an extensive donor program for human semen. Special requests and custom collections available.

Semen related products offered by Lee Biosolutions:
497-11 Prostate Specific Antigen Human (PSA)
498-11 PSA-ACT Complex Human
991-04P Human Semen pooled
CPSA-80A Prostate Specific Antigen Polyclonal Anti-human Affinity Purified

During the process of ejaculation, sperm passes through the ejaculatory ducts and mixes with fluids from the seminal vesicles, the prostate, and the bulbourethral glands to form the semen. The seminal vesicles produce a yellowish viscous fluid rich in fructose and other substances that makes up about 70% of human semen. The prostatic secretion, influenced by dihydrotestosterone, is a whitish (sometimes clear), thin fluid containing proteolytic enzymes, citric acid, acid phosphatase and lipids. The bulbourethral glands secrete a clear secretion into the lumen of the urethra to lubricate it.

Sertoli cells, which nurture and support developing spermatocytes, secrete a fluid into seminiferous tubules that helps transport sperm to the genital ducts. The ductuli efferentes possess cuboidal cells with microvilli and lysosomal granules that modify the semen by reabsorbing some fluid. Once the semen enters the ductus epididymis the principle cells, which contain pinocytotic vessels indicating fluid reabsorption, secrete glycerophosphocholine which most likely inhibits premature capacitation. The accessory genital ducts, the seminal vesicle, prostate glands, and the bulbourethral glands, produce most of the seminal fluid.