Can sperm be seen with the human eye?
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Tags
- #unaided
- #forget
- #enough
- #microscope
- #seeing
- #sperm
- #cells
- #micrometers
- #bigger
- #measure
- #human
- #naked
- #without
- #millimeter
- #about
- #large
- #object
- #times
- #tiniest
- #roughly