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.
Scott Joplin. Scott Joplin was the best-known American ragtime musician and composer, setting the standard for all that followed. Ragtime â which gave birth to Jazz â has a rhythm in which the accompaniment is strict two-four time and the melody, with improvised embellishment, is in steady syncopation. Joplin`s instrument of choice was the piano. Early days
One of the genreâs most popular examples, however, raised more questions than it answered. Bobbie Gentryâs biggest hit was âOde To Billie Joe,â in which the young narrator tells the storyâagainst a backdrop of biscuits and small-town Mississippi gossipâof how Billie Joe McAllister jumped off the Tallahatchie Bridge. It became Billboardâs No. 3 song of 1967.