Electron Micrographs

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70,000x
70,000x
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96,000x

(70,000X)

High magnification electron micrograph of an ultra-thin section of a group A streptococcus sibling pair. At this magnification, especially in the cell on the left, the cell wall and cell surface fibrils, consisting primarily of M protein, are well defined. Interdigitaion of these fibrils between neighboring cells of different chains is also in plain view.
Strain: C126/21/1; M-type 43.