Use of the nirB Promoter to Direct the Stable Expression of Heterologous Antigens in Salmonella Oral Vaccine Strains: Development of a Single–Dose Oral Tetanus Vaccine
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چکیده
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effect of oral presentation on development of l2 learners grammar
this experimental study has been conducted to test the effect of oral presentation on the development of l2 learners grammar. but this oral presentation is not merely a deductive instruction of grammatical points, in this presentation two hypotheses of krashen (input and low filter hypotheses), stevicks viewpoints on grammar explanation and correction and widdowsons opinion on limited use of l1...
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چکیده ندارد.
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terms of address as an important linguistics items provide valuable information about the interlocutors, their relationship and their circumstances. this study was done to investigate the change route of persian address terms in the two recent centuries including three historical periods of qajar, pahlavi and after the islamic revolution. data were extracted from a corpus consisting 24 novels w...
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ژورنال
عنوان ژورنال: Nature Biotechnology
سال: 1992
ISSN: 1087-0156,1546-1696
DOI: 10.1038/nbt0892-888