elevated concentrations of k+ ( 35 mm ) have previously been shown to support the survival of most embryonic chick sympathetic neurons in vitro ( wakade et al. , exp cell res 144 ( 1983 ) 377 , [ 23 ] ) and to be interchangeable with nerve growth factor ( ngf ) as a survival-promoting agent for these cells ( wakade & thoenen , neurosci lett 45 ( 1984 ) 71 [ 21 ] ) .
C0007634
cell
C0007620
survival