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.
Michigan Islands Refuge was established as a refuge and breeding ground for migratory birds and other wildlife. Shoe Island (one acre), Pismire Island (two acres), and Scarecrow Island (seven acres) were the first to be acquired in 1947 and were designated as Federal Wilderness Areas in 1970.