NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Influence of stress, weightlessness, and simulated weightlessness on differentiation of preosteoblastsThe effects of 18.5 days of weightlessness aboard a satellite, stress of restricted feeding, stress of noise and vibration to simulate space flight and 21 days of head down suspension via the Morey-Holton model for simulated weightlessness was studied. Nuclear size of fibroblastlike cells in PDL on the anterior surface of maxillary first molars was classified as: (1) A-cells, self perpetuating precursors with a nuclear volume 80 micron B-cells, nonosteogenic fibroblasts with a nuclear volume of 80-119 micron 3, C-cells, preosteoblasts that are in G1 stage of the cell cycle with a nuclear size of 120-170 micro, and D-cells, preosteoblasts that are in G2 stage of the cell cycle with a nuclear size 170 micro.
Document ID
19840010778
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Roberts, W. E.
(University of the Pacific Stockton, CA, United States)
Date Acquired
August 12, 2013
Publication Date
February 1, 1984
Publication Information
Publication: NASA. Washington NASA Space Biol. Program
Subject Category
Life Sciences (General)
Accession Number
84N18846
Funding Number(s)
CONTRACT_GRANT: NAGW-356
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

There are no available downloads for this record.
No Preview Available