High homocysteine and high serum folate may be associated with low vitamin B12 levels in IBD patients. We did not find any association between a low APC ratio and the factor V Leiden mutation or high factor VIII levels. Both hyperhomocysteinaemia and a low APC ratio may contribute to an increased risk of thromboembolic disease in IBD patients.

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Control of mange mites, Myobia musculi and Myocoptes musculinus, in large numbers of imported mice is described. Previously recommended acaricides were found inadequate in clearing Myobia unless unrealistic treatment schedules were employed. A simple dipping procedure at fortnightly intervals with a bucarpolate-pyrethrins agent which is safe both for adult and newly born mice, completely cleared mice that were heavily infested.

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