Automation of a Kinetic Method for Determining Angiotensin-Converting Enzyme in Serum, James L. Groff,’ Roman B. Rutkowski,2 3 and Nancy B. Brantley3 (1 Dept. of Med. Technol., Georgia State Univ., Univ. Plaza, Atlanta, GA 30303; 2 Depts. of Pathol. and Lab. Med., Emory Univ., 1841 Clifton Rd., Atlanta, GA 30329; and Grady Health Systems, Clin. Lab., 80 Butler St., SE, Atlanta, GA 30335; ‘autho...

Subclinical inflammatory activity may be one of the factors which influences the variable natural history of farmers' lung. Serum lysozyme (LYS) and angiotensin converting enzyme (ACE) have been measured in 52 farmers with a previous history of farmers' lung and in 51 healthy control farmers. The group with farmers' lung assessed during the winter, although having had no recent acute symptoms, ...

A dipeptidase that hydrolyzes L-Ala-Gly and a wide spectrum of other L-ar-dipeptides has been purified 800-fold from the soluble fraction of Ehrlich-LettrB mouse actesis tmnor cells. The highest specific activity (micromoles of dipeptide hydrolyzed at 40” per min per mg of protein) achieved was 2,600 with Ala-Gly, the substrate with which purification was followed. With the best substrate, Ala-...