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Sperm get lost in space, Australian research into microgravity impacts suggests
Theguardian.com and 8 more
- Microgravity significantly reduces the number of sperm able to navigate through a simulated reproductive tract, raising space fertility concerns.
- Sperm lose direction in microgravity even when motility stays the same, indicating cues beyond movement guide navigation in the simulated tract.
- Chemotactic cues like progesterone may help navigation in microgravity, but natural levels might be too low for consistent effects.
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