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.
Resolved by the Senate and House of Representatives of the State of Michigan, That the apple blossom be and the same hereby is designated and adopted as the state flower of the state of Michigan. History: 1897, J.R. 10, Imd. Eff. Apr. 28, 1897 ;-- CL 1897, 1755 ;-- CL 1915, 1096 ;-- CL 1929, 133 ;-- CL 1948, 2.11.