n.滴定度；滴定量；滴定率；脂酸冻点测定
=titer.
The bacterium is the Gramnegative bacillus Legionella pneumophila and the diagnosis confirmed by a rising antibody titre. 本病由革兰阴性的需气军团杆菌所引起，抗体滴定度升高可确定诊断。
