Immune system or the use of immunosuppressive medication. In contrast, autoimmunity results from a hyperactive immune system attacking normal tissues as if they were foreign organisms. Common autoimmune diseases include Hashimoto's thyroiditis, rheumatoid arthritis, diabetes mellitus type 1, and systemic lupus erythematosus. Immunology covers the study of all aspects of the immune system. Immunology is a science that examines the structure and function of the immune system. It originates from medicine and early studies on the causes of immunity to disease. The earliest known reference to immunity was during the plague of Athens in 430 BC. Thucydides noted that people who had
Wolf attack Wolf attack Although wolf attacks do occur, their frequency varies with geographical location and historical period. Gray wolf attacks are rare because wolves are often subsequently killed, or even extirpated in reaction by human beings. As a result, wolves today tend to live mostly far from people or have developed the tendency and ability to avoid them. The country with the most extensive historical records is France, where nearly 7,600 fatal attacks were documented from 1200 to 1920. In modern times, they occur most often in India and neighboring countries. There are few historical records or modern cases of wolf