The immune system includes certain types of white blood cells. It also includes chemicals and proteins in the blood, such as antibodies, complement proteins, and interferon. Some of these directly attack foreign substances in the body, and others work together to help the immune system cells.
Off-site search results for Scott Joplin... African Americans - Scott Joplin, King of Ragtime Scott Joplin Known as the King of Ragtime, this son of a former slave was born circa 1867 in Texas and may have had access to a piano in the white-owned house in which his mother worked. He's best known for The Maple Leaf Rag
1 Scott Joplin â Perhaps the most famous composer of ragtime music, Joplin composed two highly popular pieces, âThe Entertainerâ and âMaple Leaf Rag.â. 2  Jelly Roll Morton â A prolific performer and outspoken personality, Morton made many recordings and his music is regarded as a bridge between ragtime and early jazz.