Examples of the answer sheets provided for the Neurosurgical (Nsx) set (A) and the Neuromuscular (NM) set (B). Abbreviations: AFB, acid-fast bacilli/Ziehl–Neelsen stain; EM, electron microscopy; GFAP, glial fibrillary acidic protein; HLA-I, human leukocyte antigen class I; IHC, immunohistochemistry; mGT, modified Gomori trichrome; mIDH1, mutant isocitrate dehydrogenase 1; NeuN, neuronal nuclear protein; ORO, Oil Red O; PAS, periodic acid–Schiff; PFK, phosphofructokinase; SS, special stain; WHO, World Health Organization; WSI, whole slide imaging.