31.   Establishment of a causal role for leukotrienes in the pathogenesis of mucosal damage has, however, remained elusive.

32.   The aim of the guidelines is to set out a clear role for each conference within a coherent, sensible framework.

33.   Alternatively, there may be a role for a central government.

34.   These data would argue against a pathogenic role for E coli in ulcerative colitis.

35.   Consequently, these results do not exclude a role for PYY in the mediation of the ileal brake mechanism.

36.   All of this ignores the nurses who have been unofficially deputising in medical roles for many years, according to senior nurse advocates.

37.   The Commission have issued a plan to define a role for the EC by setting up a coordinated Industrial Policy.

38.   An increased role for the doctrine of proprietary estoppel?

39.   It is evident from this spate of new product launches that LIFFE sees an important European role for itself in the future.

40.   The Foreign Office, too, had no intention of departing from its search for a leading role for Britain in Western Europe and elsewhere.