Anti-Allergic Effects of Vernonia amygdalina Leaf Extracts in Hapten-Induced Atopic Dermatitis-Like Disease in Mice oleh Nlandu Roger Ngatu, Maiko K. Okajima, Maki Yokogawa, Ryoji Hirota, Mikiro Takaishi, Masamitsu Eitoku, Basilua Andre Muzembo, Asif Bhati Sabah, Takao Saruta, Mitsuhiko Miyamura, Tatsuo Kaneko, Shigetoshi Sano, Narufumi Suganuma