False-colour scanning electron micrograph (SEM) of the surface of human skin,showing a hair penetrating the outer layer of squamous cells that comprise the epidermis. The hair is covered by a modified cellular layer known as the hair cuticle; these cells are highly flattened & partially overlap one another. The epidermal cells are composed of the protein keratin,which provides a tough,uninterrupted covering over the body surface; keratin serves as a waterproofing material & is impermeable to many disease organisms. Magnification: X 340 at 35mm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / CNRI |
Taille de l’image : | 3633 px × 4932 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |