Bate C M
J Embryol Exp Morphol. 1976 Feb;35(1):107-23.
Maps of the thoracic and abdominal neuroblasts have been prepared by reconstruction from serial sections of timed Locusta migratoria embryos. The maps are bilaterally symmetrical, periodic and consistent for embryos of the same age, with a fundamental arrangement of 7 rows of 4-10 cells plus 1 median neuroblast per segment. A map of 60 + 1 cells is repeated in each of the three thoracic segments, with an additional median cell developing late at the anterior end of the prothorax. The arrangement in the abdomen is similar, with 56 + 1 cells per segment. Neuroblasts differentiate and subsequently degenerate in an antero-posterior sequence, but construction of the thoracic ganglia involves a delayed degeneration of part of the original set in these segments. The maps show that the neuroblasts are as reliable in their number and arrangement as the adult cells they produce. The number of neuroblasts used in constructing the relatively complex thoracic ganglia is similar to that which produces the simpler abdominal ganglia. Some motorneurons have the same parent neuroblast. The maps are intended as a first step in an analysis of the relation between the progeny of different neuroblasts and the family of neurons which each neuroblast produces.
通过对特定发育阶段的飞蝗胚胎连续切片进行重建，绘制了胸段和腹段神经母细胞图谱。这些图谱呈双侧对称、具有周期性且对于相同年龄的胚胎是一致的，每个节段基本排列为7排，每排有4 - 10个细胞，再加上1个中间神经母细胞。在三个胸节的每一个中，60 + 1个细胞的图谱重复出现，在前胸前端还有一个额外的中间细胞发育较晚。腹部的排列相似，每个节段有56 + 1个细胞。神经母细胞按前后顺序分化并随后退化，但胸神经节的构建涉及这些节段中部分原始神经母细胞的延迟退化。这些图谱表明，神经母细胞在数量和排列上与其产生的成体细胞一样可靠。用于构建相对复杂的胸神经节的神经母细胞数量与产生较简单的腹神经节的神经母细胞数量相似。一些运动神经元具有相同的亲代神经母细胞。这些图谱旨在作为分析不同神经母细胞的子代与每个神经母细胞产生的神经元家族之间关系的第一步。
