This is the answer table (top = antisera, rows below = mouse components (i.e. Ag)):
I understand all of them but the IgM/Fc fragment antigen - I thought it would be positive with kappa chain only (possibly IgG Fab antisera may react?). There's no gamma chain in IgM so that rules out gamma chain and IgG Fc. The J chain might be positive.
Any enlightenment? I'm SO confused.
Edited by glutamate, 24 March 2013 - 07:12 AM.