FIGURE 2:
Immunohistochemical staining of the pathological earmarks of Alzheimer's disease.
A. Antibody that is specific for complement protein C1q stains senile plaques in diseased tissue (upper left corner), whereas
healthy tissue (lower right corner) is not stained.
B. Dystrophic neurites are stained by antibody that recognizes the membrane attack complex in diseased (but not in normal) tissue.