Negative staining and TEM analysis of F62 wild-type (A) and F62ΔpIII (B) strains. The sizes of diplococci from the wild type and mutant strains are 2.296 ± 0.0819 μM and 2.275 ± 0.075 μM, respectively. Values are the mean ± SEM from 20 images for each strain.
Leuzzi et al. BMC Microbiology 2013 13:251 doi:10.1186/1471-2180-13-251