Small double-stranded, non-protein coding RNAs (21-31 nucleotides) involved in GENE SILENCING functions, especially RNA INTERFERENCE (RNAi). Endogenously, siRNAs are generated from dsRNAs (RNA, DOUBLE-STRANDED) by the same ribonuclease, Dicer, that generates miRNAs (MICRORNAS). The perfect match of the siRNAs' antisense strand to their target RNAs mediates RNAi by siRNA-guided RNA cleavage. siRNAs fall into different classes including trans-acting siRNA (tasiRNA), repeat-associated RNA (rasiRNA), small-scan RNA (scnRNA), and Piwi protein-interacting RNA (piRNA) and have different specific gene silencing functions
Task analysis in education -- Congresses : Tasks in action : task-based language education from a classroom-based perspective / edited by Kris Van den Branden, Koen Van Gorp and Machteld Verhelst
2007
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Task analysis in education -- Europe : Task-based language learning in a real-world digital environment : the European digital kitchen / edited by Paul Seedhouse
Task Force on Canadian Unity. / http://id.loc.gov/authorities/names/n79062470 : Weaving a Canadian Allegory : Anonymous Writing, Personal Reading
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Task Force on Canadian Unity -- Congresses : Le débat qui n'a pas eu lieu : la Commission Pepin-Robarts, quelque vingt ans après / sous la direction de Jean-Pierre Wallot
TASKS. : Education for tomorrow's jobs / Susan W. Sherman, editor ; Committee on Vocational Education and Economic Development in Depressed Areas, Commission on Behavioral and Social Sciences and Education, National Research Council
Tasma, 1848-1897 -- Diaries. : Tasma's diaries : the diaries of Jessie Couvreur with another by her young sister Edith Huybers / edited by Patricia Clarke