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
Watch videos & listen free to Scott Joplin. Scott Joplin (born between June 1867 and January 1868, died April 1, 1917) was an American musician and composer of ragtime music. He remains the best-known ragtime figure and is regarded as one of the three most important composers of classic ragtime, along with James Scott and Joseph Lamb.