explants from chick embryo pns ( ganglion trigeminale ) and from cns of embryonal rats ( hippocampus ) and dissociated cells from chick embryo cerebral hemispheres were cultivated in maximow chambers in the presence of various concentrations of placental serum and of a chemically synthesized tripeptide gly-his-lys .
C0206417
pns
C0040995
ganglion trigeminale