... lining insures a hospital-clean environment for the rearing of brood.The Constituents of Propolis Chemically speaking, propolis ... strains of bacteria that resist chemical antibiotics.The field of influence of propolis is extremely broad ... , sinus congestion, colds, influenza, bronchitis, gastritis, diseases of the ears, periodontal disease, intestinal infections, ulcers, eczema eruptions, pneumonia, ...