experiments in which various immunoglobulins were added to cffa-positive culture media and then incubated with specific anti-immunoglobulins suggested that cffa binding was class specific for human igg , subclass specific for igg1 and igg2 , and occurred with intact unaggregated heavy chains but not with kappa- and lambda-light chains , or fab , fc , and f ( ab ' ) ( 2 ) fragments .
C0021027
immunoglobulins
C0021037
lambda-light chains