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
Scott Joplin's exact date of birth and location is not known, though it is estimated that he was born between the summer of June 1867 and January 1868. Born to Florence Givens and Giles Joplin, Scott grew up in Texarkana, a town situated on the border between Texas and Arkansas. The Joplins were a musical family, with Florence being a singer and banjo player and Giles a violinist; Scott learned how to play the guitar at a young age and later took to the piano, displaying a gift for the instrument.