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Heparin found in gut tissue, gut washes and faeces following oral administration of three repeated doses of 7.5 mg kg−1 at different time intervals. Time intervals were 12, 24, 48 and 72 h apart. Tissue and washes were harvested 4 h after the last dose from six rats per group selected at random. Mean±s.e.m. are shown. Faeces were collected from 20 rats per group throughout the time of heparin exposure.
