Numerous similarities between Crohn's disease and sarcoidosis are being reported. Because of previous findings of culturable mycobacteriophage in the serum of many patients with sarcoidosis, mycobacteriophages were sought in serum of patients with Crohn's disease. No difference was found in the frequency of positive cultures between patients with Crohn's disease and normal control subjects.
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Parent et al. (1971) studied this question.
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