highly sensitive solid-phase immunoassay systems for human immunoglobulin a ( iga ) , secretory component ( sc ) , secretory immunoglobulin a ( siga ) were developed by use of antisera against the alpha-chain of iga and sc , and beta-d-galactosidase from escherichia coli as label .
C0020838
secretory immunoglobulin a
C0036538
sc