منابع مشابه
Nerve commitment in Hydra. I. Role of morphogenetic signals.
The kinetics of nerve commitment during head regeneration in Hydra were investigated using a newly developed assay for committed cells. Committed nerve precursors were assayed by their ability to continue nerve differentiation following explanation of small pieces of tissue. Committed nerve precursors appear at the site of regeneration within 6 hr after cutting and increase rapidly. The increas...
متن کاملNerve commitment in Hydra. II. Localization of commitment in S phase.
The kinetics of nerve differentiation were investigated during head regeneration in Hydra. In particular the cell cycle parameters of stem cells undergoing nerve commitment were determined. Head regeneration induces extensive nerve commitment localized at the regenerating tip (G. Venugopal appearance of committed nerve precursors is followed 12 hr later by the appearance of newly differentiated...
متن کاملSpatial pattern of nerve differentiation in Hydra is due to a pattern of nerve commitment.
The pattern of nerve differentiation along the body column of Hydra was investigated. Nerve precursors in late S phase were labeled with [‘Hlthymidine and their distribution compared with that of newly differentiated nerves. The two distributions were found to be the same. Based on independent evidence that nerve commitment occurs in midto late S phase (G. Venugopal and C. David, 1981, Develop....
متن کاملCommitment during nematocyte differentiation in Hydra.
Nematocytes in Hydra differentiate from interstitial stem cells. Desmonemes differentiate mainly in the distal half of the body column while stenoteles differentiate predominantly in the proximal half. This difference was used to determine the timing of nematocyte-type commitment in the differentiation pathway. Cells were transferred from distal or proximal regions to all positions in the body ...
متن کاملHydra: Imaging Nerve Nets in Action.
Mapping whole-brain activity during behavior represents one of the biggest and most exciting challenges of systems neuroscience. New research has taken advantage of the unique biology of an ancient organism to bring us a step closer to that goal.
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ژورنال
عنوان ژورنال: Developmental Biology
سال: 1981
ISSN: 0012-1606
DOI: 10.1016/0012-1606(81)90481-4