Abstract:
:Thoracic sensory neurons in bullfrog tadpoles can be induced to form connections typical of brachial sensory neurons by transplanting thoracic ganglia to the branchial level at stages when some thoracic sensory neurons already have formed connections. In order to find out how many postmitotic sensory neurons survive transplantation, [3H]thymidine was administered to tadpoles in which thoracic ganglia were transplanted to the brachial level unilaterally at stages VII to IX. Between 16 and 37% of the neurons in transplanted ganglia were unlabeled, as compared to 46 to 60% in unoperated ganglia. Transplanted ganglia contained fewer unlabeled neurons than corresponding unoperated ganglia, indicating that transplantation caused degeneration of postmitotic neurons. Therefore, a large fraction of the neurons that formed connections typical of brachial sensory neurons probably differentiated while they were at the brachial level.
journal_name
Dev Bioljournal_title
Developmental biologyauthors
Smith CLdoi
10.1016/0012-1606(90)90369-tsubject
Has Abstractpub_date
1990-12-01 00:00:00pages
476-80issue
2eissn
0012-1606issn
1095-564Xpii
0012-1606(90)90369-Tjournal_volume
142pub_type
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