| [the first and second polar bodies in mouse oogenesis]. | using light and electron microscopy, we studied several characteristics of the interphase nuclei and mitotic chromosomes in embryonic cells cyclops kolensis (lill) before and after chromatin diminution. we detected the reduction of one of the two nucleoli in somatic cells resulting from chromatin diminution. however, the ratio of the total diameter of the nucleoli to the diameter of the nucleus or to the diameter of the cell remains unchanged. granules of the chromatin to be eliminated become vi ... | 1995 | 7666995 |
| [chromatin diminution at the border of the xx and xxi centuries]. | the size of genomes in eukaryotic organisms is one of the greatest mysteries of biology. as known from the middle of the xx century, the level of organization of a particular organism, does not depend on its genome size, i. e. on dna amount in the nucleus. we believe that an actual function of non-coding dna stands behind the phenomenon of chromatin diminution, known already for 100 years. diminution of chromatin normally takes place in cells involved in body building and never occurs in develop ... | 2006 | 16892848 |
| [the developmental cycle of proteocephalus thymalli (cestoda, proteocephalidae)--a parasite of the arctic grayling from lake baikal]. | the life cycle of proteocephalus thymalli (cestoda, proteocephalidae), a parasite of siberian glame (thymallus arcticus), was repeated under experimental conditions. the first intermediate hosts, the copepods epischura baicalensis, cyclops kolensis and c. vicinus, were determined. the developmental time of p. thymalli in the first intermediate host was determined and the morphology of the larval and adult phases was described. | 2007 | 2616201 |