House dust mites (Dermatophagoides pteronyssinus) Scale : mite length = 0.3 mm Technical settings : focus stack of 95 images - microscope objective (Nikon achromatic 10x 160/0.25) on bellow
By Gilles San Martin from Namur, Belgium (House dust mitesUploaded by Jacopo Werther) [CC-BY-SA-2.0], via Wikimedia Commons