At a magnification of 403x, this 2005 scanning electron micrograph (SEM) provided a close-up view of the chitinous appendicular exoskeletal cuticle of an unidentified millipede found on the ground in the Decatur, Georgia suburbs. After having been secreted by the organism itself during its development, this firm cuticle, composed of a polysaccharide called chitin that is bound together with proteins, provides a very firm, inflexible, and protective exterior covering, much in the same way a suit of armor protects a soldier.
CDC/ Janice Carr; Oren Mayer
November 4, 2012
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