Results:The epithelial cells of all gland ducts , capillaries and small blood vessels showed 5-HTR immunoreactivity in cytoplasma, but nuclear staining was negative.

• 结果:大鼠腮腺的各级导管的上皮细胞、毛细血管及小血管的内皮细胞均呈5-HT受体免疫反应阳性,免疫反应物分布于胞质,胞核为阴性反应。