| CIg | intracytoplasmic immunoglobulin |
|---|---|
| cIgM | cytoplasmic immunoglobulin M |
| CIT | citrate; combined intermittent therapy; conjugated-immunoglobulin technique; crossed intrinsic trans... |
| Fc | centroid frequency; fraction/centrifuge; fragment, crystallizable [of immunoglobulin] |
| Fc' | a fragment of an immunoglobulin molecule produced by papain digestion |