Researcher Irina Kerkis of the Butantan Institute, São
Paulo, and her colleagues used stem cells found in the pulp of teeth for the
study. They injected these cells into the testes of live mice and found them
migrating to the tubules where sperm are produced.
"I think we are on the right track, but we need to
understand more about the mechanism," said Kerkis
The details of the
study were presented at the meeting of the European Society of Human
Reproduction and Embryology.