ODIUM 发表于 2025-3-26 23:05:21
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Wirnt Rick activated protein kinase (MAPK) pathway is a commonly-used intracellular signaling pathway used by eukaryotic cells to regulate such processes as cell growth, differentiation and survival (.,.). At the apex of the pathway is the small GTPase Ras whose activation state regulates a hierarchical threeConfess 发表于 2025-3-27 08:04:03
Wirnt Rickreign DNA into plants allows the creation of engineered plant lines with improved production traits, resistance to pests, pathogens or herbicides, or the ability to synthesize speciality recombinant proteins such as human hormones, enzymes and antibodies. Many of these plants are now reaching commerInjunction 发表于 2025-3-27 09:50:03
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Wirnt Rick approximately 30 residues up-stream from eukaryotic genes transcribed by RNA polymerase II; preferred bases at the boundaries between the coding parts of genes and their intervening sequences, which are postulated to be recognition sites for splicing enzymes ; regions of sequence homology whichEntrancing 发表于 2025-3-27 22:18:07
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Wirnt Rickto many types of eukaryotic cells, a revolution has occurred in the level of our understanding of the way genes are regulated in living cells. Nonetheless, in spite of the impressive progress made concerning the role of DNA sequence in functions such as promotion, enhancement, initiation of transcri分离 发表于 2025-3-28 06:54:20
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han 20 years, but more efficient protocols are now available, based on somatic cell nuclear transfer (SCNT) which permits targeted genetic modifications. Although the efficiency of transgenic animal production by microinjection technology is low, many animals with agriculturally important transgenic