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
(1868-1917). Scott Joplin, the King of Ragtime music, was born near Linden, Texas on November 24, 1868. He moved with his family to Texarkana at the age of about seven. Even at this early age, Joplin demonstrated his extraordinary talent for music. Encouraged by his parents, he was already proficient on the banjo, and was beginning to play the piano.