Example sentences of "previously [been] [vb pp] to be [adj] " in BNC.
Next page| No | Sentence |
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| 1 | The carboxy-terminus has previously been demonstrated to be essential for Oct-2 to activate transcription ( 20 , 44 , 45 ) . |
| 2 | Certainly the reliance now of necessity of such systems demands , and fortunately the nature of these types of premises is likely to permit , a much closer relationship between the ‘ business end ’ of the system and the valves which control it than has previously been considered to be necessary . |
| 3 | In this study nifedipine plus diuretic lowered blood pressure more effectively than propranolol plus diuretic , which has previously been shown to be effective in black hypertensive patients . |
| 4 | The same RNA samples from several cell lines were probed for ATF1 RNA , β2-microglobulin RNA ( as a monitor of differentiation ( 46 ) ) and CREB RNA which has previously been shown to be present at similar levels in UF9 and DF9 cells ( 47 ) . |
| 5 | This domain has previously been shown to be important for transcriptional activation ( 44 , 45 ) . |