On Maturation in the Eggs of Limnaea Stagnalis L
نویسندگان
چکیده
منابع مشابه
the effect of e-64 on the developmental competence of sheep cocs during in vitro maturation
in the present study, the effect of e-64 at different concentrations (0.5, 1, 5 and 10 µm) added to (1) the ivm medium on oocyte nuclear maturation and developmental competence of ovine oocytes, and (2) to the ivc medium on embryonic development of ovine embryos were investigated.
Periodic Sensitivity of Mechanisms of Cytodifferentiation in Cleaving Eggs of Limnaea Stagnalis.
INVESTIGATIONS on cellular reproduction have led to a highly resolved and integrated picture of the cell cycle in a morphological and physiological sense. The various preparations for division, doubling of components or syntheses, follow their own time course parallel to one another. It has become evident that the various factors involved in cell division are dissociable, for example chromosome...
متن کامل: the effect of sericin levels (silk glue protein) on rate of in vitro maturation, fertilization and culture of sheep oocytes
هدف از آزمایش اول بررسی اثر سطوح مختلف سریسین [0 (control), 0.1, 0.5, 1.0, 2.5 %] افزوده شده به محیط , ivm بر cumulus cell expansion، بلوغ هسته و توسعه متوالی جنین، در گوسفندان نژاد سنجابی در فصل تولید مثلی می باشد. از سرگیری میوز به وسیله خارج شدن اولین پولار بادی اندازه گیری و هم چنین درصد رسیدن جنین های دو سلولی به مرحله کلیواژ و بلاستوسیت نیز به عنوان نشانه ای از میزان شایستگی توسعه اولیه ج...
The formation of the second maturation spindle in the eggs of Limnaea, Limax, and Agriolimax.
EGG maturation in Limnaea stagnalis has been described by Raven (1945, 1949). It exhibits some peculiarities, by which the Limnaea egg seemed to stand apart from all other animal eggs in which the maturation processes have been accurately studied so far. In the first place it appeared that the second maturation spindle arises by a direct and gradual transformation of the centrosphere at the inn...
متن کاملElectrophysiology of the giant nerve cell bodies of Limnaea stagnalis (L.) (Gastropoda: Pulmonata).
The giant somata (cell bodies) of neurones in the central ganglia of Limnaea stagnalis (L.) have become material for several lines of neurobiological research. For example, the electrical responses of these cells have been employed in pharmacological studies (Vulfius & Zeimal, 1967; Vulfius et al. 1967; Zeimal & Vulfius, 1967; Jurchenko, Vulfius & Zeimal, 1973; Moreton & Gardner, 1974). Also, t...
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ژورنال
عنوان ژورنال: Bijdragen tot de Dierkunde
سال: 1949
ISSN: 0067-8546,2666-0644
DOI: 10.1163/26660644-02801044