In 2010, the FDA approved Botox as a treatment for chronic migraine. Get more information about how and why it can help with this migraine subtype. In 2010, the FDA approved Botox as a treatment for chronic migraine.
In modern lithography, the image is made of a polymer coating applied to a flexible aluminum plate. The image can be printed directly from the plate (the orientation of the image is reversed), or it can be offset, by transferring the image onto a flexible sheet (rubber) for printing and publication.
There is an entirely different process used in making each type of image. A lithograph is a very high quality machine printed image made by using a 4 color separation process much like how the covers of any color magazine is printed. A Serigraph is a silk screened image. With a Serigraph the original oil painting is scanned and separated digitally into each and every color found in the original. A separate silk screen is created for each and every color that was scanned.