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.
WHEREAS, A widely and generally conducted contest to choose a State bird, carried on by the Michigan Audubon Society, resulted in nearly 200,000 votes being cast, of which Robin Red Breast received many more votes than any other bird as the most popular bird in Michigan; and.