杀死
发表于 2025-3-23 10:58:55
New Directions in Latino American Cultures diverse groups of animals, including mammals, provides a means for isolating potential development-regulating genes. Our studies have focused on the isolation and characterization of the structure and expression of the mouse homeobox-containing gene .. . is a member of the . cluster of six homeobox
我怕被刺穿
发表于 2025-3-23 16:49:09
https://doi.org/10.1057/9780230616653 present in the coding regions of actively transcribed genes (1–23) and thus define a homeo-gene family of as yet unknown function. It is supposed, by analogy with similar genes in insects (24, 25 and refs. therein), and by structural comparisons with prokaryotic DNA-binding domains (26), that such
overreach
发表于 2025-3-23 18:52:34
Ethics, Alterity, and Designed Emotion,n of cell-cell contacts and are thought to play a central role in a number of developmental processes. Three size classes of NCAM polypeptides (NCAM-180, -140 and -120 according to their apparent Mr) are differentially expressed during development and differentiation. Their size differences are due
玉米
发表于 2025-3-24 02:09:42
https://doi.org/10.1057/9780230616967ss their adhesive function only in the presence of Ca., ii) they are protected by Ca. from proteolytic degradation and iii) they are integral membrane glycoproteins with a similar molecular weight of 120 kDa.
朋党派系
发表于 2025-3-24 02:36:41
D’Ann R. Penner,Keith C. Ferdinandraction on the cell surface is translated into activation of intercellular pathways, initiating a sequence of events which eventually results in a specific cellular response. Several growth factor receptors posses protein tyrosine kinase activity that is intrinsic to the receptor molecules. Signalli
延期
发表于 2025-3-24 08:56:50
Making a Spectacle of Homosexuality,w: Sporn and Roberts, 1988). They exert their mitogenic or differentiating activity at nanomolar concentrations by binding to specific high-affinity receptor molecules localized in the plasma membrane. The ultimate biological action is dependent on the nature of the target cell. The number of identi
Subdue
发表于 2025-3-24 12:30:23
Making a Spectacle of Homosexuality,surface receptors. The insulin receptor structure has been elucidated through a variety of techniques (Van Obberghen, 1984), and more recently, the aminoacid sequence of the human insulin receptor precursor was unravelled by recombinant DNA technology (Ullrich et al., 1985; Ebina et al., 1985). Desp
仲裁者
发表于 2025-3-24 17:23:30
https://doi.org/10.1057/9780230621541 prime mature blood cells to carry out their differentiated functions (Metcalf, 1985; Clark and Kamen, 1987; Sieff, 1987). The . proliferation of normal myeloid progenitor cells in semisolid medium requires the continuous presence of CSFs, and the types of colonies obtained, whether granulocyte, mac
聋子
发表于 2025-3-24 22:37:12
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Delude
发表于 2025-3-24 23:27:20
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