CP and diabetes mellitus: Forty-four male Sprague–Dawley rats with induced diabetes were divided into six groups based on burn wound location and size: T5 (n = 10, tongue 5 mm), T3 (n = 10, tongue 3 mm), P5 (n = 10, palate 5 mm), P3 (n = 10, palate 3 mm), CT (n = 2, control tongue), and CP (n = 2, control palate).