serum
The levels of       enzymes such as angiotensin converting enzyme, carboxypeptidase-N and leucine       aminopeptidase were found to be elevated in serum as well as in tissues.
The levels of       enzymes such as  @OBJECT$ , carboxypeptidase-N and leucine       aminopeptidase were found to be elevated  @PREDICAT$   @SUBJECT$  as well as in tissues.