Diphtheria is a potentially fatal, contagious disease that usually involves the nose, throat, and air passages but may also infect the skin. Its most striking feature is the formation of a grayish membrane covering the tonsils and upper part of the throat.
Pure Food and Drug Act: A Muckraking Triumph. The first Pure Food and Drug Act was passed in 1906. The purpose was to protect the public against adulteration of food and from products identified as healthful without scientific support. The original Pure Food and Drug Act was amended in 1912, 1913, and 1923. A greater extension of its scope took place in 1933.
Fermentation is believed to have been the primary means of energy production in earlier organisms before oxygen was at high concentration in the atmosphere, and thus would represent a more ancient form of energy production in cells. Fermentation occurs naturally but humans have used and controlled the process. It is used in the production of alcohol, bread, vinegar, and other food or industrial products: Fermentation (food) - the conversion of carbohydrates into alcohols or acids under anaerobic conditions used for making certain foods.