Table 2: Semiquantitative analysis of the morphological injury of lung after PQ or/and PDTC treatment.

Animal groupSacrifice time ( )edemaHyperemiahemorrhageinflammationAlveolar walls thickenAccumulation of collagenous fober

Control
PQ treatment3++++++++
7++++++++
14 ++ ++++
21 + +++++
PQ+ PDTC3 ++
treatment7+ + +
14 + ++
21 + +++