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 (between July 1867 and January 1868 - April 1, 1917) was an Afro-American composer and pianist, born near Texarkana, Texas, into the first post-slavery generation â¦ . He achieved fame for his unique ragtime compositions, and was dubbed the King of Ragtime.. The Jim Crow Era was a post of the civil war   Ragtime Music   The mai â¦ n instrument used is the piano   It was most popular between 1897-1918   The most famous rag-time composers were: Scott Joplin, Joseph Lamb, James Scott.