Growth curves in various media. P. gingivalis ATCC 33277 (wild type), Δ695, Δ694, and Δ695-694 were cultured in sTSB, CDM, CDM supplemented with 0.15 M NaCl or 0.2 M NaCl, and DMEM supplemented with 1% BSA (FV, fraction V) or 1% BSA (HG, high grade purified).