CD68 and amyotrophic lateral sclerosis: [48]–[53]. We observed Iba1 to delineate ramified microglia in the neuraxis of ALS, whereas CD68 mainly stained intracellular microglial cell compartments suggestive of endosomes/lysosomes (Figure S1), indicating that Iba1 and CD68 could be of complementary usefulness as markers of microglial pathology in ALS.