an antiserum , prepared against partially reduced and alkylated rat milk siga , was shown to contain antibodies reacting with a rat milk protein of alpha-2 mobility , which possessed antigenic determinants common with siaa , eluted from sephadex g-200 at the same position as mammalian secretory components , and could be released from rat siga by mild reduction and alkylation .
C0036538
secretory components
C0020838
siga