MOHAMMAD MOHAIDIN, F., P. PUSPANATHAN, N. A. CHE JALIL, and F. A. HUSSAIN. “THE EVALUATION OF PROGRAM DEATH 1 (PD-1) AND PD-1 LIGAND (PD-L1) EXPRESSIONS IN HISTOLOGICAL SUBTYPES OF PRIMARY EXTRANODAL NON HODGKIN LYMPHOMA”. Malaysian Applied Biology, vol. 50, no. 2, Nov. 2021, pp. 25-35, doi:10.55230/mabjournal.v50i2.1987.