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31. One crucial criterion in justifying a screening programme is that intervention is more effective in presymptomatic disease than after symptoms have appeared.

32. Today, genetic screening is expanding due to genetic engineering technology.

33. According to U.S. and Western officials, Washington has quietly begun to review its screening of imports under the sanctions regime.

34. Record surge A DRAMATIC rise in sales helped the crushing and screening equipment producer Powerscreen International to record profits.

35. The panel is to consider whether the data justify a recommendation for regular screening in this age group.

36. It is not an argument over which of the two screening strategies will confer the greater medical benefit.

37. The company admitted that there had been a delay in installing new screening equipment at the plant, which produces boiled sweets.

38. The autumn screening of the third series is expected to provide a welcome fillip to the railway's passenger numbers.

39. First, screening rules are difficult to specify, given the vastly diverse needs of users.

40. The issue is to estimate the marginal benefit from the increased frequency of screening examinations against the marginal increased cost.

40. Wish you can benefit from our online sentence dictionary and make progress every day!

41. For the embryos which are implanted after screening have not been genetically modified in any way.

42. The germ, a strain of klebsiella which is resistant to most antibiotics, was found during routine screening.

43. In the current economic climate it is not justifiable to provide screening services of doubtful value.

44. Screening for hypertrophic cardiomyopathy can be done either by echocardiography or by genetic screening.

45. During the screening process, however, the Education Ministry made some changes which were criticized by liberals.

46. The choice in Britain is therefore between withholding all chemoprophylaxis and using a rapid screening test.

47. This ignores the substantial number of additional cases that would arise if screening became widespread.

48. Screening for the parasite should be part of the investigative procedures in children with chronic diarrhoea.

49. Screening services are often fragmented, and the public may not have equal access to particular screening programmes.

50. It wasn't the best programme on the night-that was a then rare screening of Sunset Boulevard.

51. Both types of cancer are now subject to national screening programmes as early detection may prevent these cancers being fatal.

52. This is an appropriate place, perhaps, for a few words about the use of roses for hedging and screening.

53. One contentious area where ethical controversies abound concerns genetic screening and the detection of high risk groups.

54. It is not clear why the age of 65 was taken as the cut-off point for these screening programmes.

55. Is it simply that our screening procedures, which are geared to human need, overlook their actual role?

56. To deny older women access to routine screening is both contra-indicated and explicitly discriminatory.

57. Managers can improve the odds of a smooth relationship by screening potential partners for compatibility.

58. There are strong arguments, however, for case-finding screening for particular conditions.

59. Surgery can sometimes assist, but again, the only long-term solution is screening of breeding stock.

60. Conservative Central Office has ordered special security screening measures to prevent firearms or bombs being smuggled into the ￡3m pavilion.