by providing a neural pathway along which growth cones of later arising neurons migrate , these pioneer axons establish the route of one of the major nerve trunks in the leg ( keshishian , 1980 ; r. k. ho and c. s. goodman ( 1982 ) nature ( london ) 297 , 404-406 ; d. bentley and h. keshishian ( 1982 ) science 218 , 1082-1088 ) .
C0027882
neurons
C0004461
axons