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.
For the same process applied to metal, see Photochemical machining. Photolithography, also termed optical lithography or UV lithography, is a process used in microfabrication to pattern parts of a thin film or the bulk of a substrate.It uses light to transfer a geometric pattern from a photomask to a light-sensitive chemical  photoresist , or simply resist, on the substrate.or the same process applied to metal, see Photochemical machining. Photolithography, also termed optical lithography or UV lithography, is a process used in microfabrication to pattern parts of a thin film or the bulk of a substrate.