bound antigen-antibody-complement complexes ( ag-ab-c ) were eluted from c3b receptors and the eluted ag-ab-c re-incubated with different blood cell types suspended in serum , or centrifuged ( along with unbound ag-ab-c found in the serum ) through 20-50 % sucrose gradients .
C0009498
ag-ab-c
C0229671
serum