![](https://nthumb.tpgimages.com/mid2_com_img/1339/15796/TOP15088736.jpg)
Single barb from a down feather. Coloured scanning electron micrograph (SEM). Rows of filaments, known as barbs, project from either side of the rachis (central shaft) of a feather. Along the length of each barb are smaller filaments, known as barbules. Downy feathers insulate a bird. Very young birds are clad only in down. Magnification: x250 when printed at 10 centimetres wide.
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Details
Creative#:
TOP15088736
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
No
Property Release:
No
Right to Privacy:
No
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