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911.
Metabolic responses of sand fiddler crab, Uca pugilator, populations in northwest Florida are greatly influenced by seasonal temperature fluctuations. Crabs acclimated at 20 °C and immediately transferred to either 14 or 26 °C produced an acute metabolic response with respective temperature quotient (Q10) values of 3.46 and 3.91. Crabs acclimated at 10 and 20 °C exhibited a Q10 of 2.62 indicating a partial compensation response. A brumation (reverse) response (Q10 value of 20.11) was observed for acclimated crabs between 5 and 10 °C. Brumation is advantageous during winter when food supplies are scarce and crabs must survive extensive periods of inactivity. 相似文献
912.
Protection from cytosine arabinoside-induced alopecia by ImuVert has recently been reported in a rat model. ImuVert, a biologic response modifier, is capable of activating mononuclear cells causing release of various cytokines. In the present study, using the young rat model, recombinant human IL 1 beta produced excellent protection from cytosine arabinoside-induced alopecia. Mouse recombinant tumor necrosis factor gave definite but modest protection whereas human tumor necrosis factor gave none. It is concluded that the protection from alopecia by ImuVert is mediated by cytokines, primarily IL 1. 相似文献
913.
J. Vila S. Abdalla J. Gonzalez C. Garcia J.A. Bombi M.T. Jimenez de Anta 《Journal of applied microbiology》1992,72(6):490-492
J. VILA, S. ABDALLA, J. GONZALEZ, C. GARCIA, J. A. BOMBI AND M.T. JIMENEZ. 1992. Vibrio cholerae is oxidase positive, a primary characteristic used to differentiate it from Enterobacteriaceae. But false negative oxidase test results have been obtained with colonies from thiosulphate-citrate-bile salts-sucrose (TCBS) agar medium. A rapid oxidase test procedure is described here. This takes 1 min, avoids false negative results and the necessity to grow the bacteria in a general-purpose medium. The bacteria may be recovered after the test and used for further investigations. 相似文献
914.
P Deschaux D Troutaud-Catanzano C Jimenez 《Bollettino della Società italiana di biologia sperimentale》1989,65(9):885-892
Neonatal thymectomy into female rats reduced estradiol plasmatic levels during the first 60 days. This disturbance was not corrected by thymosin opotherapy. Comparison with male rats and testosterone disturbance was discussed. 相似文献