In the United States, an estimated 645,000 men ages 20 to 50 have azoospermia, a condition in which no sperm are present in their ejaculate. Now, scientists are testing a potential treatment: ...
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Male's quality of reproductive cell after 43 years of age has declined sharply...Increased accumulat...
A study found that the risk of reproductive cell increases as men age. It has been shown that disease-causing gene mutations accumulate in reproductive cell, increasing the likelihood of causing ...
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