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
His finances were precarious throughout his career, despite a steady income from the Maple Leaf Rag. Joplin had the majority of his works published by John Stark of Sedalia, Missouri although he did use other lesser-known companies including his own Scott Joplin Music Publishing Company.His first opera A Guest of Honor was lost after an unsuccessful tour in 1903.he following is a complete list of musical compositions by Scott Joplin (ca. 1867âApril 1, 1917).