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211.
Š. Bauer O. Bauerová L. Masler D. Šikl 《Cellular and molecular life sciences : CMLS》1962,18(10):441-441
Summary By application of the counter-current method on extracts ofErysimum canescens Roth, four new crystalline glycosides have been isolated besides of Helveticoside and Erysimoside. The structure of one of them, named Erycanoside, has been determined as Strophanthidin--2-desoxy-D-glucosido-glucoside. 相似文献
212.
Summary The direct effect of somatostatin on the absorption of 3-oxymethylglucose in epithelial cells isolated from the small intestine of chicken was studied. The presence of somatostatin in the incubation medium at concentrations of 3.5×10–8 M and 7×10–8 M produced significant dose-dependent increases in the accumulation of sugar in the enterocytes. This effect might be due to an increase in the cell membrane permeability caused by hormone action. 相似文献
213.
Summary Reserpine, colchicine and Rb+ ions exerted specific effects on sexual behaviour and locomotor activity of the fruit fly. Neuroleptics and antidepressants were inactive. 相似文献
214.
215.
Summary While it is clear that juvenile hormone analogues disturb metamorphosis, there is some controversy about their effect on the activity of the corpus allatum in the course of metamorphosis. The present experiments showed that juvenile hormone analogues applied to eggs did not prevent inactivation of the corpus allatum at the onset of the last larval instar ofPyrrhocoris apterus. 相似文献
216.
The distribution of satellite cells (sc) in long-sarcomere muscle fibers from the carpopod extensor muscle of the crayfish (Astacus fluviatilis) has been studied electron-microscopically. The sc are spindle-shaped and are oriented parallel to the long axis of a fiber. The mean lengths of sc nuclei (17.00 microns) and that of myonuclei (18.35 microns) differ non-significantly. In older animals, the mean ratio of the number of sc nuclei to the total number of nuclei (sc nuclei + myonuclei) is 0.0716, 0.0848, and 0.034 for the tendon, central and shell segments, respectively. The corresponding values for younger animals are 0.158, 0.166, and 0.081. The mean numbers of sc nuclei per mm of a fiber are 94, 117, and 47 (older animals), and 164, 117, and 94 (younger animals) for the tendon, central and shell segments, respectively. The high incidence of sc per unit fiber length in crayfish may be related to the fact that crayfish muscle fibers have a much larger diameter than vertebrate muscle cells. 相似文献
217.
A. Čihák 《Cellular and molecular life sciences : CMLS》1977,33(1):16-17
Summary The insoluble form of phosphomonoesterase precipitated by means of Zn2+-ions was prepared from the partially purified extract of rat kidney. The freeze-dried preparation of the precipitated enzyme is highly active and is stable on heating at 100°C. 相似文献
218.
E San Miguel Salán 《Experientia》1984,40(8):861-862
Samples from 4 populations of D. melanogaster were treated with formaldehyde by the larval feeding method, and induced lethality was scored. The results showed relevant differences among the populations analyzed. 相似文献
219.
220.
Nancy B. Esterly G. V. Alm R. D. A. Peterson A. Dorfmán 《Cellular and molecular life sciences : CMLS》1971,27(2):208-209
Zusammenfassung Hemmung von Hexosamin vermag die Sekretion von-Globulin durch antikörperproduzierende Zellen unter in vitro Bedingungen nicht zu verhindern. Dies könnte darauf hinweisen, dass unter den gewählten Bedingungen kohlehydratfreie-Globulinmoleküle sezerniert werden. 相似文献