CD68 and myeloid sarcoma: Similar to what happens in the thalamus of MS donors [54], we found a significant increase in pre-synaptic phagocytosis specifically in MS1 cortical microglia (Fig. 5j–k), which is in line with an overall increased phagocytic capacity of MS1 microglia as indicated by increased CD68 expression (Fig. 2) and corroborated here by increased LAMP1 expression (Online Resource 5b).