Damaged hair,SEM
Numéro d’image : 11876440
| Scanning electron micrograph (SEM) of a shaft of badly damaged human head hair. Hair is a protein (keratin),which develops out of a tubular hair follice found in the skin epidermis. The shaft,the visible part,consists of three layers; an outer scaly layer,the cuticle,which is mostly lost in this damaged specimen; a middle layer,the cortex (largely what's visible here),forming the bulk & containing hair colour pigments; & a central core,the medulla,which may be hollow. Hair cells are dead except for a layer at the base of the root which divide to form new cells,pushing the older ones upward & finally beyond the skin surface. Mag: X1,000 (10x8) | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Scharf, David |
| Taille de l’image : | 3950 px × 5029 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : |
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