it has been proposed that during this period the survival , differentiation and axon outgrowth of the motoneurones depend upon retrograde factors produced by the muscles , and in a previous study , we used a quantitative assay for neurite outgrowth from dissociated embryonic spinal neurones in vitro to characterize a neurite-promoting activity in media conditioned by embryonic muscle cells .
C0026845
muscles
C0596995
embryonic muscle cells