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
And that, as they say, is another story. Scott Joplin (1868-1917), an American composer and pianist, was one of the most important developers of ragtime music. Some regard him as as the originator, however musical history clearly shows that the elements of Ragtime were in place well before Joplin entered the scene.