Renal Pi excretion after 70% PH. Plasma Pi (A) and urinary Pi/urinary creatinine (B) in sham rats versus PH rats (open and closed circles, respectively). Blood and urine are collected at 6, 12, 24, 48, 72, and 96 hours. Metabolic cages are used for urine collection from sham and PH rats. Data are presented as the mean±SEM (n=5–7/group). *P<0.05; **P<0.01. Cr, creatinine.