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A-C. Comparison of cell wall thickness of SA29213-A and SA29213-B with the parental strain S. aureus ATCC® 29213TM. Thin-section micrographs of the following strains are shown: A – S. aureus ATCC® 29213™; B – variant SA29213-A; C – variant SA29213-B. Final magnification x20,000. Scale bar indicates 200 nm.
