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(Natural News) Competition tends to bring out the best in people. Turns out, that saying applies to sperm as well. Spanish and Swedish researchers found that spermatozoa can alter themselves to compete with rival sperms from another male of the same species. In an animal model of adult zebrafish (Danio rerio), the researchers found that spermatozoa... |
from NaturalNews.com https://ift.tt/2DiXTkX
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