Fig. 1. Light microphotographs using inverted microscopy of rat peritoneal mast cells (RPMCs) in hydroxyethyl piperazineethanesulfonic acid-Tyrode buffer. RPMCs of normal group (A), RPMCs stimulated with compound 48/80 (B), RPMCs pretreated with disodium cromoglycate (100 µg/ml) (C), RPMCs pretreated with type-A procyanidine polyphenols from Cinnamomum zeylanicum (TAPP-CZ; 3 µg/ml) (D), RPMCs pretreated with TAPP-CZ (10 µg/ml) (E), and RPMCs pretreated with TAPP-CZ (30 µg/ml) (F). White arrows indicate mast cells.
