Segmental identity and cerebellar granule cell induction in rhombomere 1
Abstract Background Cerebellar granule cell precursors are specifically generated within the hindbrain segment, rhombomere 1, which is bounded rostrally by the midbrain/hindbrain isthmus and caudally by the boundary of the Hoxa2 expression domain.While graded signals from the isthmus have a demonstrable patterning role within this region, the signi