Streptococcus bacterium. Transmission electron micrograph of a section through a Streptococcus bacterium attached to a human tonsil cell (at lower frame). This beta-haemolytic (group A) Streptococcus bacterium (top) is a rounded or spherical Gram-positive cocci. Surrounding the bacterial cell contents (green) is the cell wall (thin,red). Around the outside is the capsule (green-brown,irregular) forming a loose slime layer. These bacteria are the most common cause of tonsillitis. They attach to the surface of the tonsil,multiply and release harmful substances. Magnification: x26,600 at 5x7cm size. x90,000 at 10x8ins | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Rantala, Dr. Immo |
Bildgröße: | 3217 px × 4443 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |