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Search Results for “Semen (human)”
 
 
1) artificial insemination. The Columbia Encyclopedia, Sixth Edition. 2001
...Artificial insemination is often used in animals to multiply the possible offspring of a prized animal and for the breeding of endangered species. Prepared semen...

2) DNA fingerprinting. The Columbia Encyclopedia, Sixth Edition. 2001
...The segments are separated using a laboratory technique called electrophoresis, which sorts the fragments by length. The segments are radioactively tagged to produce...

3) vasectomy. The Columbia Encyclopedia, Sixth Edition. 2001
...Vasectomy is a popular method of birth control: in 1983, figures showed that approximately 10 million men had been sterilized in the U.S. since 1969. Excision of...

4) prostate gland. The Columbia Encyclopedia, Sixth Edition. 2001
...The prostate produces a thin, milky, alkaline fluid that is secreted into the urethra at the time of emission of semen, providing an added medium for the life and...

5) pharming. The Columbia Encyclopedia, Sixth Edition. 2001
...Employing the techniques of genetic engineering, they then introduce the hybrid genes into animal embryos, which are then reimplanted into foster mothers and carried...

6) urethra. The Columbia Encyclopedia, Sixth Edition. 2001
...The urethra is about 11/2 in. long (3.8 cm) in women, terminating above the vaginal opening. In men the urethra is about 8 in. (20 cm) long and terminates in an opening...

7) cytomegalovirus. The Columbia Encyclopedia, Sixth Edition. 2001
...Americans carry cytomegalovirus by the time they reach adulthood. Most experience no symptoms or mild symptoms such as enlarged lymph nodes, low fever, and fatigue...

8) medical jurisprudence. The Columbia Encyclopedia, Sixth Edition. 2001
...Autopsy (see post-mortem examination) is often used to determine the cause of death, particularly in cases where foul play is suspected. Post-mortem examination can...

9) puberty. The Columbia Encyclopedia, Sixth Edition. 2001
...The pituitary gland secretes hormones that stimulate enlargement and development of the sex organs, which thus become capable of reproduction. The appearance of secondary...

10) urinary system. The Columbia Encyclopedia, Sixth Edition. 2001
...They are bean-shaped, about 4 in. (10 cm) long and about 21/2 in. (6.4 cm) wide. Their purpose is to separate urea, mineral salts, toxins, and other waste products...

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