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Representative results of immunofixation electrophoresis (IFE) of cryoglobulins. (a) Type I [monoclonal IgM(λ)]; (b) type II [monoclonal IgM(κ) and polyclonal immunoglobulins]; (c and d) type III (polyclonal immunoglobulins). The results shown were tested by IFE using SAS-3 (Helena Biosciences Europe, Tyne and Wear, United Kingdom) (a, b, and c) and Hydrasys (Sebia, France) (d).
