Ghysen Alain, Dambly-Chaudière Christine, Aceves Efrain, Jan Lily -Yeh, Jan Yuh -Nung
Laboratoire de Génétique, Université Libre de Bruxelles, 67 rue des Chevaux, 1640, Rhode-St-Genèse, Belgium.
Department of Physiology, School of Medicine, University of California, 94143, San Francisco, CA, USA.
Rouxs Arch Dev Biol. 1986 Jul;195(5):281-289. doi: 10.1007/BF00376060.
The thoracic and abdominal segments of the Drosophila embryo contain 373 neurons innervating external sensory structures and 162 neurons innervating chordotonal organs. These neurons are arranged in ventral, lateral and dorsal clusters within each segment, in a highly invariant pattern. Two fascicles are formed in each segment as the sensory axons grow ventrally towards the CNS and meet motor axons growing dorsally from the CNS. In all but the last segment, the anterior fascicle is contributed by the dorsal and lateral neurons, while the posterior one is formed by the ventral neurons. Five distinct segmental patterns are described, corresponding to (1) the prothorax, (2) the other two thoracic segments, (3) the first seven abdominal segments, (4) the eighth and (5) the ninth (and possibly the tenth) abdominal segments.
果蝇胚胎的胸段和腹段包含373个支配外部感觉结构的神经元以及162个支配弦音器官的神经元。这些神经元在每个节段内以高度不变的模式排列成腹侧、外侧和背侧簇。当感觉轴突向腹侧生长朝向中枢神经系统并与从中枢神经系统向背侧生长的运动轴突相遇时，每个节段会形成两个神经束。除最后一个节段外，在前一个神经束由背侧和外侧神经元形成，而后一个神经束由腹侧神经元形成。文中描述了五种不同的节段模式，分别对应于（1）前胸，（2）其他两个胸段，（3）前七个腹段，（4）第八腹段以及（5）第九（可能还有第十）腹段。
