Blood cells, SEM

Numéro d’image : 13634180
Blood cells, SEM
Blood cells. Coloured scanning electron micrograph (SEM) of human red blood cells (erythrocytes), a single white blood cell (leucocyte) and fibrin strands. Red blood cells are biconcave, giving them a large surface area for gas exchange, and highly elastic, enabling them to pass through narrow capillary vessels. The cell's interior is packed with haemoglobin, a red iron-containing pigment that has an oxygen-carrying capacity. The main function of red blood cells is to distribute oxygen to body tissues and to carry waste carbon dioxide back to the lungs. White blood cells are part of the body's immune system and fight invading pathogens.Magnification: x6000 when printed at 10 centimetres wide.
Licence : Droits gérés
Crédit: Science Photo Library / Gschmeissner, Steve
Taille de l’image : 4700 px × 4039 px
Model Release : Non requis
Restrictions : -

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