relative optical density

They are mainly in the dorsomedial hypothalamic nucleus and around fornix of hypothalamus. The relative optical density（ROD） of orexin A was larger in the nicotine-exposed neonates than that in the saline neonates（P＜0.05）.
模型組下丘腦orexin A的相對光密度值高於對照組,差別有統(tǒng)計學意義(P＜0.05)。