Sharing of Profits Is Debated As the Value of Tissue Rises
Special report, Who Owns Your Genes, on growing wariness among patients over supplying tissue for genetic research unless they share in profits earned by laboratories from subsequent patent awards; many are demanding money up front and are writing contracts spelling out what they are entitled to if they help scientists find genes; some experts on patent law say trend is unfortunate, while others say current system of awarding gene patents seems unjust; others attribute problem to fact that rules of game regarding medical research have changed since virtually all academic research now involves commercial interest; say many patients remain willing to engage in genetic research for good of humanity, but believe they should share in windfall if researchers on other side subsequently make billions of dollars from their efforts; photos (M)