Correspondence: Hisashi Yamaura
Hisashi YAMAURA
Yasuhiro KOMATSU*
Hiroshi SATO
Fumihiko SHIROTA
Ryokoh SHIRASAKA
Seiji WAKI**
Institute of Oriental Medicine, Tokyo womensÕs Medical College, Tokyo 162, Japan.

Fumie KOBAYASHI
Moriyasu TSUJI
 Departement of Tropical Disease and Parasitology, Kyorin University School of Medicine, Tokyo 181, Japan.

*1st Kampo Pharmacology Department, Tumura Central Research Laboratories, Ibaraki 300-11, Japan.

**Gunma Prefectural College of Health Science, Maebashi 371, Japan.