Abstract

We report a new method of fluorangiography employing a polypeptide fraction from bovine factor VIII that has shown remarkable affinity to the endothelial surface of microvessels. Rabbits injected with this compound, labeled with fluorescein isothiocyanate, show a very delayed disappearance time of fluorescence in retinal vessels when compared with those injected with ordinary fluorescein. This allows a good observation of the late time, which is of great diagnostic advantage for several pathological conditions.

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