Linked Life Data

3546483

Source:http://linkedlifedata.com/resource/pubmed/id/3546483

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1987-3-30
pubmed:abstractText
Previous immunofluorescence studies of microtubule distribution in fertilized sea urchin eggs have suffered from poor resolution caused by cell thickness, unavoidable artifacts resulting from excessive flattening, or extraction by detergents of membranes and other lipid-containing structures that may be of interest in relation to the microtubules. To avoid these difficulties, we have developed a fixation and embedding protocol based on buffered paraformaldehyde fixation and butyl-methyl methacrylate embedment, which allows immunofluorescence staining of 0.5-1 micron sections. Polymerization artifacts are reduced by polymerizing the methacrylate at a relatively low temperature (40-45 degrees C) and by flat embedding for more uniform polymerization. Using this method, we have examined mitotic stages in the first cleavage cycle of the sea urchin Strongylocentrotus purpuratus. We provide evidence that the interphase microtubules that appear after first division are not derived from the mitotic asters but are new structures growing from organizing centers within the degenerating mitotic asters. During the transition from mitosis to interphase, there is a temporary overlap of old and new microtubules to form a very large composite aster at telophase before the old structure finally disappears.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0022-1554
pubmed:author
pubmed:issnType
Print
pubmed:volume
35
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
343-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Transition from mitosis to interphase in sea urchin first division: immunofluorescence studies of tubulin distribution in methacrylate sections.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.