Biography. After five gold medals at the 1967 Pan American Games, great things were expected of Mark Spitz at the 1968 Olympics, but he surprisingly failed to win an individual event. Before the 1972 Olympics, however, Spitz became undoubtedly the world's greatest swimmer, and considered by many the greatest ever.iography. After five gold medals at the 1967 Pan American Games, great things were expected of Mark Spitz at the 1968 Olympics, but he surprisingly failed to win an individual event. Before the 1972 Olympics, however, Spitz became undoubtedly the world's greatest swimmer, and considered by many the greatest ever.
What substance is release by the mast cells in response to allergic reaction? Histamine is the primary effector substance released by the mast cell in response to an allergy. When you have an allergy to something, you exhibit certain common symptoms. Retired college science professor. Member of Beta Beta Beta Biological Honor Society, ACS & AAAS.
Histamine Release Symptoms. Histamine is a chemical in the body that is released when the body is exposed to an allergen. Allergens may include airborne allergens (such as pollen and dust mites), certain foods (such as peanuts and shellfish) or insect venom. Histamine is released in an effort to protect the body from an allergen; however, sometimes an overload of histamine can result in life-threatening symptoms.