London, United Kingdom
Pigeon Feather, Sem
Photograph - Photograph
Pigeon feather, coloured scanning electron micrograph (SEM). This is a small portion of a feather, showing two barbs (running from upper left to bottom right). The barbs stem from a thick central shaft up the middle of the feather. Each barb has an array of barbules protuding from either side of it. Feathers are made of the protein keratin.
May 1st, 2013
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