Privately held Nuron Biotech Inc. hooked a big fish for its first licensing deal. The Exton, Pa.-based company signed an agreement with Mitsubishi Tanabe Pharma Corp. (MTPC), of Osaka, Japan, to commercialize its HibTiter vaccine (Haemophilus b conjugate vaccine [diphtheria CRM197 protein conjugate]) in Japan, both as a single entity and for combination product use.