1
These depositions were positive for Congo red stain and showed apple- green birefringence under polarized light.
2
We provide further evidence that amyloid formation is not limited to P1, since bacterial colonies without this adhesin demonstrate residual green birefringence.
3
DAs were considered to be present if deposits were stained both by Congo red with apple- green birefringence under polarized light and by anti-β2-microblobulin antibody.