Abstract

131I-labelled antibodies to the fragment E of human fibrin, anti-rat fibrinogen, non-immune rabbit IgG and 67Ga-citrate were used for scintigraphy and distribution studies in experimental tumours in rats. The best visualisation was achieved with 131I-labelled anti-rat fibrinogen antibodies at intervals longer than 48 h after administration. Tumour to tissue ratios found in distribution studies performed formed more than 48 h after administration were higher in most examined tissues when using 131I-labelled antibodies than those obtained with 67Ga-citrate.

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