Abstract: The present invention is for a three-dimensional device for teaching the important structures and functions of an organ in a body in order to increase an individual's understanding of the organ and possible medical problems involving the organ. An individual places the glove-like or mitten-like three-dimensional device on his hand and positions his hand in such a way as to accentuate the three-dimensional aspect of the device, then places that hand on his own body to indicate the general location of the organ of interest.

Abstract: Thermosetting, bottom-applied polymeric anti-reflective coatings exhibiting high optical density, rapid plasma etch rates, high solubility in preferred coating solvents, excellent feature coverage, and improved stability in solution are disclosed. The principal component of these new anti-reflective coatings is a polyester resin produced by the reaction of one or more difunctional aliphatic carboxylic acids with a stoichiometric excess of a di- and/or a trifunctional aliphatic primary alcohol, wherein at least one of the dicarboxylic acids may contain a reactive methylene (--CH.sub.2 --) group. The resulting polyester resin reaction product is further modified by attaching light-absorbing groups to some or all of the reactive methylene groups (if present) and/or hydroxy groups present on the resin. The dye-attached polyester resin is combined with an aminoplast crosslinking agent and acid catalyst in a suitable solvent system to form the final anti-reflective coating.

Abstract: Anti-reflective coating compositions having improved etch rate, inter alia, are prepared from certain high molecular weight polymers and copolymers, particularly glycidyl methacrylate with grafted dyes.