Dietary docosahexaenoic acid increases cerebral acetylcholine and improves learning ability in stroke-prone spontaneously hypertensive rats: Minami, M.1, Kimura, S1., Hirafuji, M1., Endo, T1., Hamauc, N1., Ebihara, T1., Kawahara, F1., Togashi, H2., Watanabe, S3. and Okuyama, H3. 1Dept. of Pharmacol., Faculty of Pharm. Sci., Health Sciences Univ. of Hokkaido, Tobetsu 061-02, Japan, 2Dept. of Pharmacol., Hokkaido Univ. Sch. of Med., Sapporo 060, Japan, 3Faculty of Pharm. Sci., Nagoya City Univ., Nagoya 467, Japan