• 1 January 1976
    • journal article
    • research article
    • Vol. 28  (4) , 370-377
Abstract
A new common variant (M1) of .alpha.1 antitrypsin was detected by isoelectric focusing of serum in a pH gradient of 3.5-5.0 in polyacrylamide gels. The variant can be clearly distinguished from the common M type only when .alpha.1 antitrypsin M is present in the same serum. It cannot be recognized on starch gel electrophoresis. The gene frequency in a population sample of USA whites was .09.