-- How to use 'Sperm Testing App' at home
A new device that attaches to a smartphone can detect whether a man’s sperm concentration or motility is abnormal with 98 percent accuracy.
Researchers hope the device, which is about the size of a small box of crayons and costs less than $5 to make, can address the need for a rapid and cheap way to detect male infertility. Problems with sperm
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