According to the Mayo Clinic, about 15% of couples are
infertile, and male infertility plays a role in over one-third of
these cases. Often, problems with sperm development are to blame.
Now, researchers reporting in ACS Nano have found a way to deliver
a protein important for sperm cell production directly to mouse
testicles, where it restored normal sperm development and allowed
previously infertile mice to father pups.