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.
The cardinal was the first bird to be given state recognition: In 1926, it was made the state bird of Kentucky. Itâs also the bird of six other states (Illinois, Indiana, North Carolina, Ohio, Virginia, and West Virginia), making it the most popular state bird.