作者: D.T. Yew , C.B. Luo , D.R. Zheno , Y.L. Guan , Y.Q. Lin
DOI: 10.1016/0306-4522(90)90157-Y
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摘要: Abstract The presence of enkephalin and substance P-positive neurons fibers were studied by immunohistochemistry (peroxidase-antiperoxidase or avidin-biotin-peroxidase complex methods) in 26 human fetuses ranging from 11 weeks gestation to 40 gestation. Enkephalin-positive localized the commissural, medial intermediate subnuclei as early 11–12 weeks' Positive around 12 many subnuclei, notably medial, intermediate, ventrolateral, ventral dorsolateral subnuclei. Substance commissural age 13 weeks. P appeared even earlier, ventral, ventrolateral Increase both enkephalin- was evident later stages development (e.g. gestation). importance appearance pain pathways major connecting with cardiovascular, gastrointestinal respiratory functions has be stressed.