Hp turnover after a single dose of phenylhydrazine of 0.2 mg/g. (A) Western blot: mice were monitored for 7 days after injection and plasma from tail vein analyzed with an antibody against Hp (left) and Hx (right). (B) Northern blot: mice were monitored for 7 days after injection and total liver RNA analyzed with a probe for Hp (top) and β-actin (bottom). Diagrams refer to Hp turnover at the plasma (A) and mRNA level (B).