Fig. 3From: A case of solitary plasmacytoma of bone showing co-expression of both immunoglobulin light chainsTumor biopsy of the neck (sampled at 2019). a H&E staining (×400) shows marked plasma cells infiltration. b CD138 staining (×200) shows diffuse positivity for these plasma cells. c, d In situ hybridization of kappa and lambda light chain mRNA (×200) and e, f immunohistochemistry of kappa and lambda light chain (×200)Back to article page