Phase-contrast video of MicroDREADDDq+ microglia cells responding to 1 µM C21 DREADD agonist. The video was recorded at 2 frame/min for 60 min on a Zeiss Axiovert 200M microscope in a 150 × 107-µm field of view. Scale bar, 10 µm. Note decreased process dynamics after C21 treatment.