TEM of streptococcus bacterium on tonsil

TEM of streptococcus bacterium on tonsil

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Credit: DR IMMO RANTALA/SCIENCE PHOTO LIBRARY

Caption: 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 10x8"

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Keywords: bacteria, bacterial, bacteriology, bacterium, beta, capsule, cause, circle circles, electron micrograph, haemolytic, images, magnified image, micro-organisms, microbe, microbes, microbiology, microscopic photos, round shape, rounded circular, slime layer, sore throat, streptococc, streptococcus, streptococcus group a, subjects, tem, throat, tonsillitis, transmission, type

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