Cold agglutinin disease. Cold agglutination - at body temperature, the antibodies do not attach to the red blood cells. At lower temperatures, however, the antibodies react to Ii antigens, bringing the red blood cells together, a process known as agglutination.
American Robin (Turdus migratorius). The robin red breast was designated as the state bird of Michigan by House Concurrent Resolution No. 30, the Senate concurring, on April 8, 1931.
List of birds of Michigan. The American robin is the state bird of Michigan. This list of birds of Michigan includes every wild bird species verified to have occurred in the U.S. state of Michigan based on records maintained by the Michigan Bird Records Committee (MBRC).