WALTHAM, Mass.--(BUSINESS WIRE)--ImmunoGen, Inc. (Nasdaq: IMGN) today announced that Genentech has licensed the exclusive right to use ImmunoGen’s Tumor-Activated Prodrug (TAP) technology with Genentech antibodies to an undisclosed target. This is the fifth such license to be taken by Genentech – in 2000 the company licensed exclusive rights to use ImmunoGen’s TAP technology with antibodies to HER2 and in 2005 licensed exclusive rights to use the TAP technology with three undisclosed targets.