An immobilized fluorogenic substrate useful in processes for identifying and quantifying, intra- and extra-cellularly, and mammalian body fluids, as well as animal cell abstracts is disclosed. The immobilized fluorogenic substrate has the structure R.sub.1 --NH--R.sub.4 --R.sub.2 --R.sub.3 wherein R.sub.1 represents an enzyme-specific oligopeptide; R.sub.2 represents a spacer group which is methylenecarbonyloxy, a methylenecarboxamido, or a methylanesulfonamido group attached to a polymethylene chain which itself has a functional group suitable for coupling with a polymer; R.sub.3 represents a biologically inert polymer; and R.sub.4 represents a fluorogenic moiety.
本发明公开了一种固定化荧光底物,用于识别和定量哺乳动物体液以及动物细胞
提取物的内、外细胞。该固定化荧光底物具有结构R.sub.1 - NH - R.sub.4 - R.sub.2 - R.sub.3,其中R.sub.1代表酶特异性寡肽;R.sub.2代表一个间隔基团,它是甲基羰酸酯基、甲基羧酰胺基或甲基磺酰胺基,附着在一个具有适合与聚合物偶联的功能基团的聚亚甲基链上;R.sub.3代表
生物惰性聚合物;R.sub.4代表荧光基团。