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. 2000 Dec;182(23):6798–6805. doi: 10.1128/jb.182.23.6798-6805.2000

FIG. 6.

FIG. 6

Structures of cell wall stem peptides identified in the pneumococcal peptidoglycan of penicillin-susceptible and -resistant strains of pneumococci. Structural assignments were based on methods described earlier (7, 14).