On the track of a killer.

Recently, hematoporphyrin derivative (H.D.) has been reported to be an important agent in tumor detection. By utilizing H.D. and a proper activating and viewing system, one can detect malignancy by fluorescence. Hematoporphyrin tends to accumulate in tumors (1) and its red fluorescence can be utilized in the delineation of neoplastic tissue. (2). Lipson, et. al. have demonstrated that with a single intravenous dose of 0.05 mg/gm body weight of H.D., the tumor exhibited good differentiation within 3 hours after administration. They further report that the amount of H.D. required is well within the range of safety for the body. (3) NBCo offers stat service on H.D. Phone collect 216-662-0212 (USA only). NBCo will process your order and guarantee shipment within 60 minutes of your call; one-day delivery anywhere in the continental USA, 80 hours anywhere in the world. Send for our free catalog containing more than 3000 items.