Ⅰ. INTRODUCTION The survival of motoneurons in vertebrates during their embryonic period depends on certain neurotrophic substances provided from their skeletal muscles. Skeletal muscles have been shown, in in vitro ...Ⅰ. INTRODUCTION The survival of motoneurons in vertebrates during their embryonic period depends on certain neurotrophic substances provided from their skeletal muscles. Skeletal muscles have been shown, in in vitro and in vivo experiments, to contain substances which are capable of enhancing the survival and development of motoneurons but preventing the展开更多
文摘Ⅰ. INTRODUCTION The survival of motoneurons in vertebrates during their embryonic period depends on certain neurotrophic substances provided from their skeletal muscles. Skeletal muscles have been shown, in in vitro and in vivo experiments, to contain substances which are capable of enhancing the survival and development of motoneurons but preventing the