Linked Life Data

6683265

Source:http://linkedlifedata.com/resource/pubmed/id/6683265

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
1983-8-26
pubmed:abstractText
Nineteen domestic cats were entrained to a 12-hr light/12-hr dark lighting cycle and killed at different times of the cycle. The numbers of rod and cone phagosomes in the retinal pigment epithelium (RPE) were quantified by light microscopy. The number of both rod and cone phagosomes shows a large increase within 2 hrs after light onset. Thereafter, the phagosome count remains low until the latter part of the dark period when the number of rod and cone phagosomes increases slightly. In a few cases, substantial variability in phagosome numbers was found between animals killed at the same times in the lighting cycle. Small (0.4-0.8 microns), dense, membrane-bound granules, that have the ultrastructural features of lysosomes, occur in large numbers in the tapetal RPE cells. The granules may contain only a homogeneous matrix or matrix plus membrane fragments or melanin. Variations in the number of such granules in different animals shows no clear diurnal pattern. Phagosome number, size, and length measurements of outer segments are used to provide estimates of cone outer segment turnover time in the cat.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0146-0404
pubmed:author
pubmed:issnType
Print
pubmed:volume
24
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
844-56
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1983
pubmed:articleTitle
Both rod and cone disc shedding are related to light onset in the cat.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.