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Morphological characterization of S. thermophilus CNRZ368 cells and chains. (A) Scanning electron micrographs of the wild-type (WT) and 6G4 strains. (B) Micrographs of the wild-type and 6G4 strains. Microscopy was performed with a Nikon D1 microscope. Magnification, ×1,000. (C) Influence of rodA or pbp2b disruption on chain length.
