منابع مشابه
Amitosis in human adrenal cells.
Adrenal pieces obtained from 3 female and 2 male patients showed morphological figures of amitosis in adrenal zona reticularis cells. Such aspects were observed in both normal and hyperactive adrenals. Nuclei appeared constricted, heavily stained, with coarse chromatin, sometimes scattered among cytoplasmic organelles, but never marginating in crescentic caps. Cleavage of the cells originated t...
متن کاملTelophase Segregation of Chromosomes and Amitosis
Cases of "distributive c-mitosis" (the term does not mean that colchicine has been used) in plant endosperm are described, in which the chromosomes of metaphase type (two-chromatid chromosomes) are distributed at random because of phragmoplast activity in a process similar to non-disjunction. There is some evidence that chromosmal fibres can be formed within the phragmoplast under special circu...
متن کاملAmitosis in human donor corneal endothelium--a serendipity?
Amitosis in human donor corneal endothelium-a serendipity? SIR,-It is generally accepted that the human corneal endothelium does not usually replicate, Kaufman et all described a single dividing (amitotic) cell in the donor cornea of a 50-year-old man, and more recently Laing et aP reported a putative mitotic figure by clinical specularmicrographs in a case ofgraft rejection. They suggested tha...
متن کاملApparent amitosis in the binucleate dinoflagellate Peridinium balticum.
Mitosis and cytokinesis in the free-living binucleate dinoflagellate Peridinium balticum are described, P. balticum contains 2 nuclei; one is a typical dinoflagellate nucleus and the other resembles the interphase nuclei of some eucaryotic cells and is here named the supernumerary nucleus (formerly called the eucaryotic nucleus). The dinoflagellate nucleus divides in the characteristic manner a...
متن کاملMicrotubules and control of macronuclear 'amitosis' in Paramecium.
The 'amitotic' division of the macronucleus during binary fission in P. tetraurelia includes a detailed sequence of shape changes that are temporally coordinated with the adoption of a series of well-defined positions and orientations inside the cell. The deployment of nucleoplasmic microtubules that is spatially correlated with the shaping ritual is more complex and precise than has been repor...
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ژورنال
عنوان ژورنال: CYTOLOGIA
سال: 1967
ISSN: 0011-4545,1348-7019
DOI: 10.1508/cytologia.32.481