B. Immunoelectron micrograph of a B cell showing location of class II MHC molecules and DM in MIICs (stars) and inva iant chain concentrated in the Golgi (G) complex.
In this example, there is virtually no invariant chain detected in the MIIC, presumably because it has been cleaved to generate CLIP. (Courtesy of Drs. H. J. Geuze and M. Kleijmeer, Department of Cell Biology Utrecht University,The Netherlands.)