Sceptridium ternatum extract exerts antiasthmatic effects by regulating Th1/Th2 balance and the expression levels of leukotriene receptors in a mouse asthma model

Effects of ST on histological changes in a mouse asthma model. Lung tissue slices were fixed and stained using hematoxylin and eosin (H&E). (A) untreated control group (normal control) (B) OVA model control group (C) OVA+Montelukast (D) OVA+ST 19.35 g/kg group (E) OVA+ST 9.675 g/kg group (F) OVA+ST 1.935 g/kg group.467