Araki M, Maeda T, Kimura H
Brain Res Bull. 1983 Jan;10(1):97-102. doi: 10.1016/0361-9230(83)90080-1.
The distribution and morphology of dopaminergic (DA) neurons in the chick retina was studied in the course of development. Fluorescent DA cells were first detected on the 13th day of incubation. They were always found in positions two or three cell rows externally from the junction between the inner plexiform layer (IPL) and inner nuclear layer (INL). On the 14th day, DA cells were found in the innermost row of the INL. Subsequently their processes extended not only bilaterally along the IPL-INL junction but also vertically into the IPL. As a result, three fiber layers were formed as laminae 1, 3 and 5 in the IPL. In the newly-hatched chick retina, a number of growth cone-like fluorescent structures with fine spikes were seen at the IPL-INL junction, indicating that DA fibers were still growing and elongating at least at hatching. On the 4th postnatal day, the ramification of dendritic processes was very prominent and they often showed a spiral configuration.
在发育过程中研究了雏鸡视网膜中多巴胺能（DA）神经元的分布和形态。在孵化第13天首次检测到荧光DA细胞。它们总是位于从内网状层（IPL）和内核层（INL）交界处向外两到三排细胞的位置。在第14天，在INL的最内排发现了DA细胞。随后，它们的突起不仅沿IPL-INL交界处双侧延伸，还垂直延伸到IPL中。结果，在IPL中形成了三个纤维层，即第1、3和5层板。在刚孵出的雏鸡视网膜中，在IPL-INL交界处可见许多带有细刺的生长锥样荧光结构，表明至少在孵化时DA纤维仍在生长和延长。在出生后第4天，树突状突起的分支非常突出，并且它们经常呈现螺旋状结构。
