Fig. 5
From: Localized primary amyloidosis of the breast: a case report and review of the literature
Immunohistochemistry. The resected breast tissue was positive for Congo red (CR), IgLCk (immunoglobulin light chain kappa [polyclonal]), and Kmab (immunoglobulin light chain kappa [monoclonal])(Fig. 5). Under polarized light, the protein exhibited yellow-green birefringence. The specimen was negative for SAA (serum amyloid A), TTR (transthyretin), IgLCλ (immunoglobulin light chain lambda [polyclonal]), and IGLL5 (immunoglobulin lambda-like polypeptide 5)