Gene responsible for pathogenesis of H pylori: (A) Cag A, (B) Cag B, (C) Tax A, (D) Hbx
Answer is A. Cytotoxic: products of two genes namely cytotoxin- associated gene A(cagA) and vacuolating agent(vacA) gene cause gastritis, peptic ulceration and cancer GENERAL AND SYSTEMIC PATHOLOGY RAMDAS NAYAK FIRST EDITION PAGE 379