Figure 1.

Microglial process motility in each live-imaging condition. (A) Speed of large process motility of microglia reported in papers referred in this review. In some cases, the speed of process motility was not specified as “extraction” or “retraction.” (B) Speed of filopodia motility of microglia reported in papers referred in this review. In Bernier et al. (9), the authors defined tiny protrusions near the tip of large process as filopodia, and provided the quantitative data of filopodia and large process. In Nimmerjahn et al. (1) and Ogaki et al. (10), short branches that emanated from the primary process of microglia were regarded as filopodia.