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Oxygen consumption of Paragnetina media (Walker): light-dark effect on respiratory rates 总被引:1,自引:0,他引:1
N N Kapoor 《Experientia》1972,28(11):1311-1312
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Ephestia cautella females will respond to a jet of air with an acceptance posture, and will respond more frequently when the air carries volatiles, probably male sex pheromones, from the male wings. 相似文献
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E. E. Ball 《Cellular and molecular life sciences : CMLS》1979,35(3):324-325
Summary Grafting and regeneration experiments on prothoracic legs of the cricketTeleogryllus commodus (Walker) demonstrate: a) that the legs retain their identity, as indicated by formation of tympanal cuticle in the adult, when transplanted to the site of a mesothoracic leg in immature animals, and b) that the presence of tympanal cuticle on a regenerate leg depends on the instar of amputation.I thank Mike Bate for the helpful discussion throughout the project and Carmen Vilcins for excellent technical assistance. 相似文献
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Summary In the respiratory lamellae of the gills of the atlantic hagfish,Myxine glutinosa, pillar cells are coupled by communicating junctions. It is suggested that these cells behave like a functional syncytium.Supported by the DFG, SFB 146. The authors are indebted to Drs F. Walvig and H. Stolte for kindly providing the hagfish. The expert technical assistance of G. Voss-Wermbter, Dipl.-Ing., and H. Heidrich is gratefully acknowledged. 相似文献
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Summary The C-banding technique has revealed the existence of single and double intrachromatidic bands in mitotic chromosomes ofTriturus marmoratus. The presence of the bands is discussed on the basis of the helical coil model versus the radial loop model, which assumes a different packing of the DNA fiber.We are very indebted to Prof. C. García de la Vega for his indispensable help, to Prof. Dr J. Martín for his comments and to M. Herrero for his support. 相似文献
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A Grynberg J Nicolas R Drapron 《Comptes rendus des séances de l'Académie des sciences. Série D, Sciences naturelles》1977,284(3):235-238
The presence of a protein disulfide isomerase (rearrangease) in wheat embryo has been demonstrated by its ability in reactivating randomly cross-linked ribonuclease. This activity requires a dialysable cofactor; after dialysis, the activity is recovered by addition of reduced glutathione. The enzyme can be precipitated by 70% saturation ammonium sulfate. 相似文献