Sluggish cell division may help explain genital defects

Researchers say a gene memorably named Sonic hedgehog controls genital development by regulating a process known as the cell cycle -- a biological event that regulates when, and how fast, cells divide to form hearts, brains, limbs and all the other complex structures needed to build an individual. The findings in mice provide insight into the molecular mechanisms that underlie growth of urinary and reproductive organs in both sexes.

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