Influenza virus and bacterium, illustration

Numéro d’image : 12249857
Influenza virus and bacterium, illustration
Illustration of an influenza virus and a bacterium. The core of the virus is its genetic material, strands of single-stranded RNA (ribonucleic acid). Surrounding these is a capsid protein coat lipid envelope. Embedded in the envelope are two types of surface protein: haemagglutinin (H) and neuraminidase (N). These determine the strain of virus and are used for recognising and binding to the host cell. Bacteria are single-celled prokaryotic organisms. The bacterial cell contains DNA, the genetic material, and ribosomes, the site of protein synthesis. It is surrounded by a plasma membrane, cell wall and capsule. Within the capsule are pili, which are used to adhere to surfaces, and flagella, which are used for locomotion.
Licence : Droits gérés
Crédit: Science Photo Library / Elam, Gunilla
Taille de l’image : 4600 px × 3067 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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