Zhen Ci Yan Jiu. 1990 ; 15(4): 274-9.

Effects of acupuncture on activity of nociresponsive trigeminal nucleus caudalis (TNC) and a comparison with the effects of nanoinjecting Met-enkephalin (ENK) into the midbrain periaqueductal gray (PAG) or bulbar nucleus reticularis paragigantocellularis (PGC).

Huang K, Xia L, Rosenfeld JP.

Institute of Acupuncture and Moxibustion, China Academy of Traditional Chinese Medicine.