%0 Journal Article %T Serum immunoglobulin G subclass concentrations in periodontally healthy and diseased individuals %A Lu, H %A Wang, M %A Gunsolley, J C %A Schenkein, H A %A Tew, J G %A , %J Infection and Immunity %@ 0019-9567 %D 1994-05-01 %I American Society for Microbiology %~ DeepDyve