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dc.contributor.authorPickett-Heaps, Jeremy D.-
dc.contributor.authorPickett-Heaps, Julianne-
dc.date2006-08-
dc.date2009-05-20T00:00:00Z-
dc.date2009-05-20T00:00:00Z-
dc.date2009-05-20T00:00:00Z-
dc.date2008-10-02T18:21:17-
dc.date.accessioned2016-10-26T17:48:21Z-
dc.date.available2016-10-26T17:48:21Z-
dc.identifierhttp://objetoseducacionais2.mec.gov.br/handle/mec/10307-
dc.identifier.urihttp://acervodigital.unesp.br/handle/unesp/360994-
dc.descriptionPresents a cultured newt cell in late prophase. Chromosome condensation is well advanced, but the nuclear envelope is still visible at the periphery of the chromosomes. Shortly after the movie begins, the nuclear envelope disperses, and the influence of the spindle on the chromosomes becomes evident. The apparently random distribution of the chromosomes is modified by the action of the spindle, and many of the chromosomes move towards a region that runs across the space previously occupied by the nucleus from lower left to upper right. During this time, chromosome condensation continues, so each chromosome becomes slightly shorter, fatter, and darker (as seen in the phase microscope). With phase optics, the mitotic spindle itself is barely visible in this cell type. It can be identified in these images as a region on either side of the clustering chromosomes that appears particularly featureless. This appearance derives from the spindle's ability to exclude many granules and cytoplasmic organelles, like mitochondria, which have characteristic phase densities. Careful examination of the 'featureless' regions will show, however, a subtle fibrosity with just-detectable filaments that run from the chromosomal region to a point on either side of it; these points are the poles of the mitotic spindle-
dc.descriptionComponente Curricular::Educação Superior::Ciências Biológicas::Biologia Geral-
dc.languageeng-
dc.publisherThe American Society for Cell Biology, ASBC Image & Video Library-
dc.relationMitosis in a Vertebrate Cell.mov-
dc.rightsYou may use the Images only for research and educational purposes in an educational institution. Images may be stored on a network server, hard drive or removable media, but only while this Agreement remains in effect. All of the Images you use must be accompanied by a notice stating, "© [Date and Author's or Owner's Name]. All rights reserved. Reprinted under license from The American Society for Cell Biology." The notice shall appear with the Images or on a credits page. "Educational purposes" means (i) non-commercial instruction or curriculum based teaching by educators to students at nonprofit educational institutions, (ii) planned non-commercial study, investigation or research directed toward making a contribution to a field of knowledge, or (iii) presentation of research findings at non-commercial peer conferences, workshops or seminars, but in any event there must be express written permission from ASCB before an Image can be published. "Educational institutions" include K-12 schools, colleges and universities. Libraries, museums, hospitals, research institutes and other nonprofit organizations are considered educational institutions when they engage in nonprofit instructional, research or scholarly activities for educational purposes-
dc.sourcehttp://cellimages.ascb.org/cdm4/item_viewer.php?CISOROOT=/p4041coll12&CISOPTR=50&CISOBOX=1&REC=14-
dc.subjectMitosis-
dc.subjectCell-
dc.subjectEducação Superior::Ciências Biológicas::Biologia Geral-
dc.titleMitosis in a vertebrate cell-
dc.typevídeo-
dc.description2To show a cultured newt cell in late prophase-
dc.description3Duration: 1 min, 23 s. Original video published in 2003. Annotator: J. Richard McIntosh. Original resource provided by Jeremy D. Pickett-Heaps. Work conducted at University of Melbourne, Melbourne, Australia. To visualize this source its necessary the instalation of Quick time. Available at: <http://www.apple.com/pt/quicktime/>-
Appears in Collections:MEC - Objetos Educacionais (BIOE) - OE

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