منابع مشابه
Dna-protein Binding in Interphase Chromosomes
The metachromatic dye, azure B, was analyzed by microspectrophotometry when bound to DNA fibers and DNA in nuclei with condensed and dispersed chromatin. The interaction of DNA and protein was inferred from the amount of metachromasy (increased beta/alpha-peak) of azure B that resulted after specific removal of various protein fractions. Dye bound to DNA-histone fibers and frog liver nuclei fix...
متن کاملHuman Interphase Lymphocyte Dna Condensation Employing Mitotic Extracts
Premature Chromosome Condensation (PCC) has been shown to be a powerful cytogenetic and cytokinetic tool in understanding cell-cycle analysis(1) and also for diagnostic purposes(2,3). Although PCC is a useful cytogenetic tool, it involves somatic cell hybridizations employing a mitotic partner. Understanding of the factors responsible for chromatin condensation and their mechanism of action can...
متن کاملAsynchronous Dna Synthesis of Sex Chromatin in Human Interphase Nuclei
The sex chromatin body is an oval or round chromatin mass approximately 1 micron in diameter lying against the inner portion of the nuclear membrane. In human tissue it is present in about 20 to 40 per cent of female cells and is absent in male cells. The sex chromatin of somatic interphase nuclei is thought to be derived from a portion of a single heteropyknotic X chromosome (1, 2). Lima-de-Fa...
متن کاملDetection of Dna Synthesis in Interphase Nuclei by Fluorescence Microscopy
INTRODUCTION affords their differentiation from other peripheral blood cells . Previous cytological identification of It is often of interest to identify those cells in a replicating cells has employed autoradiography mixed population which are synthesizing DNA . (3-6) . These cells can now be identified by fluoresFor example, division of thymus-dependent lymcence microscopy (7, 8), due to the ...
متن کاملMigrating planets
A planet orbiting in a disk of planetesimals can experience an instability in which it migrates to smaller orbital radii. Resonant interactions between the planet and planetesimals remove angular momentum from the planetesimals, increasing their eccentricities. Subsequently, the planetesimals either collide with or are ejected by the planet, reducing the semimajor axis of the planet. If the sur...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Cell Biology
سال: 2006
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb.1733rr1