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971.
972.
973.
Summary Quantitative and qualitative differences in auxin-oxidases extracted from auxin-dependent (S) or auxin-independent (MB) sycamore cells were analyzed. MB auxin-oxidases have a higher activity, but the molecular weight of this enzymatic complex is lowered by freeze-drying, without loss of the activity. Correlations with auxin-independence are discussed in this context. 相似文献
974.
Summary An accessory for a commercial 10-place filtration apparatus is described, which allows the easy recovery of both filter-bound material and flow-through in the study of DNA-protein interactions by assaying binding of protein to cellulose nitrate filters.The technical assistance of Christine Michalowski is gratefully acknowledged., Supported by the Deutsche Forschungsgemeinschaft. 相似文献
975.
976.
D. R. Hall P. S. Beevor R. Lester Brenda F. Nesbitt 《Cellular and molecular life sciences : CMLS》1980,36(2):152-154
Summary (E,E)-10,12-Hexadecadienal has been identified as a component of the sex pheromone of the female spiny bollworm moth,Earias insulana, by gas-chromatographic, electroantennographic and microchemical studies of abdominal tip extracts and entrained volatiles from female moths.This work was carried out under Ministry of Agriculture, Fisheries and Food licence HH 11599/139, issued under the Destructive Pests and Diseases of Plants Order 1965. 相似文献
977.
978.
4000 rads of mixed gamma neutron radiation administered to rhesus monkeys released a significant amount of histamine into their circulation. When the monkeys were treated with a mast-cell histamine depleter (compound 48/80) for 4 days and then irradiated, no increase in circulating histamine was seen. When 48/80 was give 20 min after irradiation, only a slight increase in histamine was seen, indicating that 4000 rads had released most of the mast-cell histamine. 相似文献
979.
Katherine H. Taber G. N. Fuller J. C. Stanley J. F. DeFrance R. C. Wiggins 《Cellular and molecular life sciences : CMLS》1980,36(1):69-70
Summary Rats were undernourished postnatally from birth through 20 days of age. They were subsequently tested for susceptibility to motor seizures kindled in hippocampus in adulthood. Compared to littermate control animals the postnatally undernourished rats were more susceptible to the kindling treatment. We conclude that early postnatal undernourishment has a permanent effect on susceptibility of the hippocampus to electrically-induced seizures.This work was supported by Public Health Service grant NS 13799, National Science Foundation grant GB 35532, and by Hoffman-LaRoche, Inc. 相似文献
980.
F C Holder J M Guerné 《Comptes rendus des séances de l'Académie des sciences. Série D, Sciences naturelles》1977,285(8):901-904
Hypophysial vasotocin of Phoxinus laevis is determined by radio-immunoassay. With different sea water dilutions it is shown that hypophysial vasotocin concentration varies with ambient salinity. This fact agrees with histological pictures. Moreover, in comparison with the results of other authors, it is established that the hypophysial morphological modifications appeared only after the hormonal changes. 相似文献