Transmission Electron Microscopy of G. vaginalis strains. The left panel is 5-1 while the panel on the right is AMD. When the strains were grown in the presence of 10% human serum, a capsule-like material was present on 5-1, but was undetectable on AMD.
Harwich et al. BMC Genomics 2010 11:375 doi:10.1186/1471-2164-11-375