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361.
M. A. Marcialis O. Flore M. E. Marongiu R. Pompei P. La Colla B. Loddo 《Cellular and molecular life sciences : CMLS》1977,33(8):1044-1045
Summary Several thiols and disulphides have been found able both to shorten the latency phase and to increase the growth of several virus strains in cell cultures.This work has been supported by a grant of Consiglio Nazionale delle Ricerche, Roma (Italy). 相似文献
362.
Summary The presence of both acetylcholinesterase reaction and glyoxylic acid-induced fluorescence of catecholamines in the same glomus cells of rat carotid body was demonstrated using combined histochemical methods. A suggestion is made that the glomus cells have both excitatory and inhibitory effects on the chemosensory nerve via acetylcholine and catecholamines, respectively.Acknowledgments. The present study was supported by grants from the Emil Aaltonen Foundation and the Finnish Cancer Foundation to Timo Waris. 相似文献
363.
E. F. Gilbert R. J. Hodach M. O. Cheung H. J. Bruyère Jr 《Cellular and molecular life sciences : CMLS》1976,32(8):1026-1027
Summary Cocaine potentiates the effects of epinephrine and norepinephrine in terms of aortic arch malformation in embryonic chicks. Cocaine itself induces aortic arch malformations when administered in large doses.This study was supported by grant No. HL 18050, National Heart and Lung Institute, National Institutes of Health, Bethesda, Maryland. 相似文献
364.
Summary
Dysdercus koenigii, studied for its sugar spectrum, showed consistent absence of trehalose in its blood and body muscles. Instead of this known reserve sugar, raffinose has been shown to fulfil this need. The biosynthesis confirmation has been made by14C glucose. 相似文献
365.
Lin JinFirst Academy Ministry of Aero -Space Industry P.R China P.O.Box -- Beijing China 《系统工程与电子技术(英文版)》1992,(3)
Fundamental definitions of distance and velocity in radar measurement principle are examined and revised from strict theoretical point of view. Synchronization scheme - for clocks in uniform, translatory relative motion is introduced as theoretical foundation for GPS and GLONASS type navigation and positioning technology. Traditional definitions of two-way radar measurement, based on arithmetic mean vlaue concept, turn out to be special cases of revised definitions for one-way radar measurement, based on geometric mean concept, derived from synchronization of moving clocks in accordance with the principle of relativity. The essential physical meaning of Lorentz transformation is interpreted in terms of radar measured parameters. Invariance or absoluteness of four dimensional interval turns out to be invariance or absoluteness of geometric mean time interval. The Lorentz factor turns out to be ratio of geometric mean and arithmetic mean time intervals in terms of radar measured parameters. Theoretical re 相似文献
366.
O Kah P Dubourg P Chambolle 《Comptes rendus des séances de l'Académie des sciences. Série D, Sciences naturelles》1979,289(13):951-953
The nucleus preopticus (NPO) and the pars lateralis of the nucleus lateralis tuberis (NLT) have been examined at the ultrastructural level. In the NPO two types of large neurons occur, both containing 140-150 nm secretory granules. The pars lateralis of the NLT contains only one cell type with similar granules. Both of these nuclei may be the source of type A fibres innervating the gonadotropic cells of Gambusia. 相似文献
367.
Recently discovered representatives of the Class Bdelloidea from Tertiary amber from the Dominican Republic represent the oldest known fossils of the Phylum Rotifera. Assuming that the fossil bdelloids had a similar mode of reproduction as present day members of the Class (apomictic thelytoky), then contrary to current thought, some lines of parthenogenetic organisms are not doomed to an early extinction and have evolved built-in mechanisms for genetic diversity. 相似文献
368.
Summary Incubation of calf rib cartilage slices with antiproteoglycan serum elevates CO2-production, but inhibits biosynthesis of proteochondroitinsulfate and of total protein. Absorbing antiserum with proteoglycan abolishes these effects.Acknowledgment. This work was supported by grant K1 193/9 and 10 from the Deutsche Forschungsgemeinschaft. 相似文献
369.
370.
L. Bernardi G. Bosisio R. de Castiglione O. Goffredo 《Cellular and molecular life sciences : CMLS》1967,23(9):700-702
Riassunto Viene riportata la sintesi della piroglutamilglutaminil-aspartil-tirosil(O-solfato)-treonil-glicil-triptofanil-metionil-aspartil-fenilalaninamide, un peptide identico per proprietà chimiche, fisiche e biologiche alla caeruleina. 相似文献