This is a scanning electron micrograph (SEM) of an FDC isolated after antigenic stimulation from mice. The FDC was in the process of iccosome formation as can be seen from the numerous beads formed by its dendrites. Observe that near the origin of the dendrites the beads are imbedded in an amorphous material (probably immune complexes). Arrow: FDC cell body; L: lymphocyte. Mag.: X3700. This and other observations (clicl on the first REF button) suggested the idea that B cells acquire antigen by endocytosing dispersed iccosomes (see second REF button) For a demonstration of the coat of immune complexes on iccosomes click on the next event in the pathway, the dispersion of iccosomes.