Scanning Electron Microscopy (43/111)

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SEM of a Porcupine Quill. This is a quill from a porcupine. (Erethizon dorsatum) The quill is designed to stick into the skin of a predator and not be easily removed.  This is an effective defensive mechanism for the porcupine. False color  Scanning Electron Micrograph (SEM).
SEM of a Porcupine Quill. This is a quill from a porcupine. (Erethizon dorsatum) The quill is designed to stick into the skin of a predator and not be easily removed. This is an effective defensive mechanism for the porcupine. False color Scanning Electron Micrograph (SEM).
Filename: KW07SEM-porcupinecolor2.jpg
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