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.
Turdus migratorius (American Robin) : University of Michigan Museum of Zoology: Animal Diversity Web. State Bird List: List of all of the state birds. Birds of Michigan: by Ted Black and Gregory Kennedy; Illustrated by Ted Nordhagen.