836893.fig.006a
(a)
836893.fig.006b
(b)
836893.fig.006c
(c)
Figure 6: Microphotograph of the heart illustrating plasma cell invasion. Note prominent plasma cell proliferation in the region of the epicardium (a) (hematoxylin-eosin, original magnification ). Immunohistochemically, the plasma cells are positive for IgG (b) and kappa-light chain (c) (original magnification, , resp.).