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Of Arms and Legs: Shedding light onto developmental gene regulation

Posted by on November 19th, 2018

Written and illustrated by: Bjørt K. Kragesteen, Malte Spielmann, and Guillaume Andrey.   In early development, the forelimb and hindlimb buds of tetrapods are morphologically uniform. However, as limb development proceeds, each individual tissue attains a characteristic morphology that ultimately defines the identity of a forelimb (arm) or a hindlimb (leg). How do undifferentiated limbs[…]