the ratio pulmonary tissue/serum amoxicillin levels reached a significant difference being higher in the amoxicillin plus ambroxol group than in the other one ( 0.411 +/- 0.04 vs 0.672 +/- 0.07 ; p less than 0.01 ) , even if the amoxicillin plasma levels were lower .
C0229671
serum
C0032105
plasma