Two California companies have donated two computer work stations and advanced software to the University of Utah, allowing the school to expand research projects on molecular graphics, officials say.

The gifts to the university's Biopolymer at Interfaces Center will be used in studies of proteins and other biomolecules that adhere to sufaces, said center director Karin Caldwell.Practical applications of this work are in the control of blood-clotting, in making coatings of artificial organs to improve compatibility with human tissues including blood, and in the manufacture of scientific instruments, drugs, cosmetics, soaps and detergents, Caldwell said.