Brazilian researchers say that stem cells from human teeth seem to grow into sperm when injected into the testes of mice.
During the study, the researchers injected stem cells from the dental pulp of human teeth into the testes of live mice.
They said that the cells appeared to migrate to the tubules where sperm usually mature, and differentiate into cells resembling human sperm.
The researchers, however, conceded that the approach was inefficient.
They found that some of the human cells fused with mouse cells, a problem that would have to be solved before the technique could be used therapeutically.
A presentation on the study was made at the meeting of the European Society of Human Reproduction and Embryology in Barcelona, Spain, on Wednesday
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