Dust mite and faecal pellet, SEM

Dust mite and faecal pellet, SEM

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Credit: DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY

Caption: Scanning electron micrograph (SEM) photocomposite of dust mite and dust mite faecal pellet (Dermatophagoides sp.). Dust mites produces 10-20 waste particles per day. The faecal pellets can trigger allergic responses. Millions of dust mites inhabit the home, feeding on dead human skin that are common in house dust. The mite's body is in three parts: the gnathosoma (head region) adapted for feeding on dead skin, the propodosma (carrying the 1st and 2nd pair of walking legs) and the hysterosoma (locating the 3rd and 4th pairs of legs). The whole life cycle from egg to adult takes approximately one month to complete, mature female mites can lay from 1-2 eggs per day. The most important house dust mites worldwide are Dermatophagoides farinae and Dermatophagoides pteronyssinus. Magnification: x70 when shortest axis printed at 25 millimetres.

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Keywords: 99901a, acariformes, acarina, allergen, allergenic, allergens, allergic, anterior, arachnid, arachnids, asthma, black and white, dead, dermatophagoides, dermotophagoides, detritus, dorsal, dust, dustmite, ectoparasite, electron, europe, european, faecal, faeces, farinae, fecal, feces, flake, flakes, house, invertebrate, invertebrates, microceras, micrograph, mite, mites, monochrome, organic, pellet, pellets, pest, pteronyssinus, pyroglyphidae, scanning, scanning electron micrograph, seawater, sem, skin, symptom, symptoms

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