Sardar, S., Saha, N. and Ghosh, A. 2022. Microglia, the Sentinel of Brain in the Evolution of Nervous System from Invertebrate to Vertebrate: A Short Review. Journal of Scientific Research. 14, 2 (May 2022), 685–697. DOI:https://doi.org/10.3329/jsr.v14i2.56222.