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941.
Y. Komai H. Sato N. Hiraiwa Y. Sawaishi 《Cellular and molecular life sciences : CMLS》1971,27(8):881-882
Zusammenfassung Wasserlösliche, proteolipide Proteine wurden von der weissen Hirnsubstanz durch Isolierungsmethoden vonTenenbaum undFolch
2 gewonnen. Ohne Lyophilisation ergab die Disk-Elektrophorese bei pH 8.3 zwei Banden.
The authors express their appreciation to Dr.K. Ueki, Dr.Y. Takahashi, Dr.Y. Takemoto and Dr.T. Kotoku. 相似文献
The authors express their appreciation to Dr.K. Ueki, Dr.Y. Takahashi, Dr.Y. Takemoto and Dr.T. Kotoku. 相似文献
942.
When we see motion, our perception of how one image feature moves depends on the behaviour of other features nearby. In particular, the Gestaltists proposed the law of shared common fate, in which features tend to be perceived as moving together, that is, coherently. Recent psychophysical findings, such as the cooperativity of the motion system and motion capture, support this law. Computationally, coherence is a sensible assumption, because if two features are close then they probably belong to the same object and thus tend to move together. Moreover, the measurement of local motion may be inaccurate and so the integration of motion information over large areas may help to improve the performance. Present theories of visual motion, however, do not account fully for these coherent motion percepts. We propose here a theory that does account for these phenomena and also provides a solution to the aperture problem, where the local information in the image flow is insufficient to specify the motion uniquely. 相似文献
943.
Résumé Nous décrivons des inclusions cristallines observées dans l'élytre extracellulaire des glandes venimeuses deLoxosceles reclusa. 相似文献
944.
945.
A new experimental model of glucocorticoid-induced tubular cyst formation has been developed in metanephric organ culture. The addition of cortisol (1.4 X 10(-5) M) to chemically defined serum-free culture medium produces cystic changes during in vitro nephrogenesis . The model isolates the role of glucocorticoids in experimental cyst formation. 相似文献
946.
Kato Y. Fusetani N. Matsunaga S. Hashimoto K. 《Cellular and molecular life sciences : CMLS》1986,42(11-12):1299-1300
Cellular and Molecular Life Sciences - Two novel furanosesterterpenes, okinonellins A (1) and B (2), have been isolated from the spongeSpongionella sp. Both compounds inhibit cell division of... 相似文献
947.
948.
Cellular and Molecular Life Sciences - 相似文献
949.
950.
Conventional antigens appear to be recognized by T lymphocytes only when associated with major histocompatibility complex (MHC) antigens. Using antigen-specific proliferation as a model for helper T lymphocytes, it has been demonstrated that Ly1+T cells recognize antigen presented in association with syngeneic Ia molecules. In contrast to responses to conventional antigens, however, a large number of studies have suggested that the stimulation of alloreactive Ly1+T cells, and helper T cells specific for allogeneic cytotoxic T lymphocyte (CTL) responses, involve the direct recognition of Ia alloantigens. For the generation of optimal allogeneic CTL activity it has been proposed that Ly1+T cells recognize allo-Ia antigens directly and provide help to pre-CTLs that respond to allo-H-2K and/or D determinants. Thus, the B6.C.H-2bm1 mutant (bm1, formerly referred to as Hz1), which is believed to consist of a substitution of two amino acids in the H-2Kb antigen, has presented a paradox, for it can stimulate strong mixed lymphocyte culture (MLC), graft versus host and CTL responses by T cells of H-2b haplotype mice in the apparent absence of any alloantigenic differences in the I region. We now present evidence that the stimulation of proliferative and helper T cells by the mutant B6.C.H-2bm1 results from the H-2Kba antigen being recognized in the context of syngeneic Ia determinants. Thus responses to both conventional antigens and allogeneic MHC gene products may proceed via the recognition of antigen in the context of self Ia molecules. 相似文献