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
Print Email. Scott Joplin, riding high in the early flush of his success, wrote the jaunty words on the preceding page for a song that he fashioned in 1904 from his sensational piano rag hit of 1899. And âThe Maple Leaf Ragâ was all that he claimed; it changed his life, and it changed American music.