Introduction The complex functions of a living cell are carried out through the concerted activity of many genes and gene products. This activity is often coordinated by the organization of Computer Science Department, Stanford University, Stanford, California, 94305, USA. Department of Genetics, Stanford University School of Medicine, Stanford, California, 94305, USA. Dept. of Cell Research and Immunology, Tel Aviv U. & Computer Science Dept., Weizmann Inst., Israel. School of...