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Bar chart showing comparative magnitude of mean values of serum Urea (mg/dl) in group I (−ve control), group IV (benzo[a]pyrene), group V (catechin) and group VI (catechin & benzo[a]pyrene) after four weeks of administration. #P > 0.05, *P < 0.05, aP < 0.01 compared to group I, bP < 0.01 compared to group IV, cP < 0.01 compared to group V.
