A method and apparatus for preparation of a substrate containing a plurality of sequences. Photoremovable groups are attached to a surface of a substrate. Selected regions of the substrate are exposed to light so as to activate the selected areas. A monomer, also containing a photoremovable group, is...http://www.google.com.au/patents/US6630308?utm_source=gb-gplus-sharePatent US6630308 - Methods of synthesizing a plurality of different polymers on a surface of a substrate
