Human hair with plant pollen, SEM

Numéro d’image : 12991584
Human hair with plant pollen, SEM
Coloured scanning electron micrograph (SEM) of a shaft of hair from a human head and pollen grains. The outer layer of a hair shaft (the cuticle) has overlapping scales of keratin. The scales are thought to be important in preventing matting of the hair. Hair is made up of the protein keratin, which is provided by the living root embedded in the skin. Hair grows from this root. As the bulb produces more keratin, a hair shaft forms and is pushed outwards from the skin. Pollen grains are the male gametes (sex cells) of plants.
Licence : Droits gérés
Crédit: Science Photo Library / Dr. Christopher B. Jackson / IKELOS GmbH
Taille de l’image : 4000 px × 2791 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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