Recently, a group of researchers in China (Andrologia doi: 10.1111/j.1439-0272.2011.01252.x) found that increased level of oxidative stress damges sperm and could lead to male infertility.
Chinese scientists set up an in vitro sperm culture system to evaluate the effects of oxidative stress (leukocyte-activated endogenous reduction-oxidation system (ROS)) on the structure [...]

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