SAN DIEGO, Sept. 19 /PRNewswire-FirstCall/ -- Vical Incorporated (Nasdaq: VICL - News) announced today that the company has granted non-exclusive, academic licenses for its broad DNA delivery technology patent estate to six additional leading research institutions -- Fred Hutchinson Cancer Research Center, Texas Tech University Health Sciences Center, University of Iowa, University of Notre Dame, University of Pittsburgh, and University of Washington. Earlier this year, the company announced the grant of academic licenses on the same terms to Stanford University, Harvard University, Yale University, and the Massachusetts Institute of Technology.