AI Summary

Scientists discovered that tiny protein fibers in semen help RNA molecules in the surrounding fluid enter sperm cells. These amyloid fibers are present in the semen’s extracellular matrix and act as carriers for RNA that can influence early embryonic development. The study shows that the fibers facilitate the transfer of RNA from the fluid outside the sperm into the sperm’s interior. This finding expands the known role of sperm cargo beyond DNA to include functional RNA delivered via these protein structures.

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