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Tinted SEM of Shetland wool from knitted pullover

Tinted SEM of Shetland wool from knitted pullover

H120/0043

Rights Managed

36.9 MB (37.0 MB compressed)

2900 x 4452 pixels

24.6 x 37.6 cm ⏐ 9.7 x 14.8 in (300dpi)

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Credit

SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY

Caption

False colour scanning electron micrograph of Shetland wool taken from a knitted pullover. Wool is the hair of sheep & reveals a similar structure as human hair. The cuticle or outer layer (visible here) is scaly. Beneath this is the cortex, the bulk of hair & which contains hair pigments. At the centre is the medulla, which may be hollow. Hair cells are dead except for a layer at the base of the root. Cells here continue to divide forming new cells while pushing the older ones upward. Wool serves as a protection against inclement weather. Magnification: X143 at 35mm size,& X1000 at 10X8 inch size. Original is BW print H120/038.

Release details

Model release not required. Property release not required.

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