It was found that the relative content of protoporphyrin (PPK ) and carotenoid in blood varied with the developing of the malignant tumor .

• 采用钛宝石激光器、光导纤维、荧光探头、多色仪、CCD、微机,组建起实施人体皮肤浅表组织内血液中的卟啉进行无创荧光检测系统。