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 pro-wolf lobby aiming to change public attitudes towards wolves, with the phrase “there has never been a documented case of a healthy wild wolf attacking a human in North America” (or variations thereof) becoming a slogan for people seeking to create a more positive image for the wolf. Although several non-fatal attacks had been reported since 1985, it was not until April 26, 2000 when a 6-year-old boy survived an attack by a wolf in Icy Bay, Alaska that the assumption that healthy wild wolves were harmless became seriously challenged. The event was considered so unusual that it was reported