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
Janis Joplin. Janis Lyn Joplin (/ËdÊÉplÉªn/; January 19, 1943 â October 4, 1970) was an influential American singer of the 1960s; her raw, powerful and uninhibited singing style, combined with her turbulent and emotional lifestyle, made her one of the biggest female stars of her era.