“…S t ultz (125) finds definite motor hyper-or hypoplasia following early limb bud transplantation or extirpation in salamander larvae which are allowed to develop to metamorphosis stages, whereas younger stages show only slight responses. Commissural neurons adjacent to motor neurons do not show a hypoplasia following limb extir pation, but rather what seems to be a compensatory hyperplasia (126). Spinal ganglia invariably had been found to react sensitively to peripheral changes both in amphibian and chick embryos.…”
“…S t ultz (125) finds definite motor hyper-or hypoplasia following early limb bud transplantation or extirpation in salamander larvae which are allowed to develop to metamorphosis stages, whereas younger stages show only slight responses. Commissural neurons adjacent to motor neurons do not show a hypoplasia following limb extir pation, but rather what seems to be a compensatory hyperplasia (126). Spinal ganglia invariably had been found to react sensitively to peripheral changes both in amphibian and chick embryos.…”
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