AIM: To analyze the effect of substanceK on pain modulation in the periaqueductal gray (PAG) of rats and indicate the neurotransmitter mechanism in endogenous analgesia system.
目的：分析K物质在大鼠中脑导水管周围灰质中参与痛觉调制的作用，揭示内源性镇痛系统的神经递质机制。
2
A calorimeter based on the quasi-steady state theory was developed to measure the latent heat of fusion and specific heat capacity of substance from 250 K to 400 K at atmosphere pressure.