Example sentences of "studies have [vb pp] a [noun] " in BNC.
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| 1 | Epidemiological and in vitro studies have confirmed a link between vitamins A , E , C , β-carotene , and colorectal cancer . |
| 2 | Such studies have received a lot of publicity , so it is small wonder that the average family doctor suspects a psychological cause rather than a physical one , especially where patients complain of multiple symptoms . |
| 3 | Molecular studies have revealed a family of IP 3 Rs that have many structural and physiological similarities to RYRs , another major family of intracellular calcium channels . |
| 4 | Other studies have used a series of slides making up the story instead of a film . |
| 5 | As with dementia , different studies have produced a range of depression prevalence estimates ranging from 6 per cent to 12 per cent . |
| 6 | Many studies have shown a relationship between serum cholesterol levels and ischaemic heart disease ( Keys , 1970 ; Kannel et al , 1971 ; Wilhelmsen et al , 1973 ; Rosenman et al , 1976 ; Kannel et al , 1979 ) , and this relationship holds even within the normal range of serum cholesterol concentration . |
| 7 | Animal studies have shown a correlation between the bastric mucosal injury induced by ethanol or acid and increased synthesis of leukotrienes . |
| 8 | Thus in vitro studies have shown a defect in the terminal ileal bile acid active transport mechanisms in patients with cystic fibrosis , which if present in vivo , would also contribute to excessive faecal bile acid loss . |
| 9 | Metallogenesis studies in south Devon have identified the role of basinal brines as mineralising agents , and rubidium/strontium isotope studies have established a Triassic age for the widespread lead-zinc-silver 'crosscourse' mineralisation . |
| 10 | By contrast , three other studies have found a positiveassociation between cigarette smoking and gall bladder disease . |
| 11 | Most of these studies have had a struggle to remain solvent , and have depended on the generosity of charitable foundations such as Nuffield and Ford , as well as finance from government agencies , often via the health services . |