609795.fig.004a
(a)
609795.fig.004b
(b)
609795.fig.004c
(c)
609795.fig.004d
(d)
Figure 4: Anti-neutrophil cytoplasmic antibodies (ANCA) associated vasculitis. (a) IgG4+ plasma cells surround a glomerulus (IgG4 immunostaining 400). (b) Accumulation of many IgG4+ plasma cells is seen in the interstitium (IgG4 immunostaining 400). (c) Many CD138+ cells are seen in the interstitium (CD138 immunostaining 400). (d) These plasma cells are IgG4 negative (IgG4 immunostaining x400).