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Products from PCR, performed with specific primers for H. heilmannii ureB, were resolved by electrophoresis. Lanes: 1 and 17, molecular weight VI ladder (Boehringer); 3, H. heilmannii DNA; 4 through 8, 10 through 15, 18 through 23, and 25 through 30, DNA extracted from gastric biopsy samples from cats 11 through 33; 32, H. felis DNA; 2, 9, 16, 24, and 31, negative controls. Lanes 3 through 5, 8, 10, 13, 15, 19 through 21, 23, 25, and 28 are positive (10 and 15 with faint bands).
