Amyloid deposition in cultures of adherent peritoneal cells. Panels A, C, E and G show Congo red and hematoxylin staining. Panels B, D, F and H show green birefringence in A, C, E and G respectively, under polarized light. Magnification, ×200. A and B: Cells derived from C57BL/6 mice and incubated with rSAA2 and AEF. C and D: Cells derived from C57BL/6 mice and incubated with rSAA2 without AEF. E and F: Cells derived from nude Balb/c mice and incubated with rSAA2 and AEF. G and H: Cells derived from amyloidotic C57BL/6 mice and incubated with rSAA2 and pepstatin (5 μg/ml).