to study this , levels of leucine aminopeptidase ( lap ) and n-acetyl-beta-glucosaminidase ( nag ) ( nmole/hr/mg urinary creatinine ) , and beta 2-microglobulin ( beta 2m ) ( microgram/mg urinary creatinine ) were measured in urine samples from 33 patients with ra receiving gold and 28 patients with various musculoskeletal diseases not receiving gold .
C0003873
ra
C0018026
gold