
(A,B) mRNA in situ hybridisation (ISH) with Epstein–Barr virus-encoded small RNA-1 probe in a case of Hodgkin’s lymphoma focally affecting the bone marrow (A) ×100; (D) ×400. (C,D) mRNA-ISH with κ and λ light chain probes in a case of myeloma: (C) κ, ×200; (D) λ, ×200.








