Editorial: Cell biology of microglia.

existence of microglia has been known for more than 100 years, some of their essential functions were revealed only in recent decades. Furthermore, with technical advances in sequencing, a plethora of expression data about microglia in health and disease has lately become available (among others Gosselin et al., 2017;Friedman et al., 2018;Saunders et al., 2018;Hammond et al., 2019). However, the specific tasks of differentially regulated genes and their interactions in microglia remain largely unknown, highlighting the importance of understanding the Cell Biology of Microglia.Thus, this "Research Topic" includes six research articles and one review about intracellular mechanisms that drive microglial functions under physiological and pathological conditions.