Example sentences of "[verb] [be] shown [adv] [to-vb] " in BNC.
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1 | At least one such species , M vaccae , has been shown actively to suppress tissue damaging reactions . |
2 | Passage of larvae through the lungs has been shown experimentally to result in multiple small haemorrhages visible over most of the lung surfaces . |
3 | Several of them — constipation , confusion , urinary incontinence and difficulty seeing and hearing — have been shown elsewhere to increase with age ( Cartwright , 1990a ) . |
4 | The data discussed here were selected according to wind-direction and particle-concentration criteria that have been shown previously to define ‘ baseline ’ periods of very clean oceanic air . |
5 | The biological corollary of this is that blocking antibodies against ICAM-1 have been shown effectively to prevent allograft rejection . |
6 | The concentrations of DDT and PCB residues reported in many studies of dolphin and porpoise tissues have been shown experimentally to cause lowered fertility and premature births in both seals and sealions. exposure to PCBs can result in failure of the body 's immune system . |
7 | Long term oral propranolol treatment or repeated endoscopic injection sclerotherapy are similarly effective in reducing rebleeding that still occurs in up to 60% of patients and neither have been shown consistently to improve survival . |