applying a combined technology for the detection of allotypic variation of the fourth component of human complement ( c4 ) , including immunofixation with anti-c4 and c4-dependent lysis after agarose electrophoresis , sodium dodecyl sulfate-polyacrylamide gel electrophoresis of c4 to separate the c4a and b alpha-chains , and the determination of rodgers ( rg ) and chido ( ch ) determinants of c4 in serum and at the blotted c4 alpha-chains , we detected rare human c4 allotypes and studied the genetic linkage .
C0009516
component
C0086418
human