[Age and features of thrombus formation in the rat]

With the aid of a laser-induced thrombosis model, the process of thrombus formation was studied in the microvessels of the small intestine mesentery of 3-4- and 12-14-month old rats. Venules and arterioles were laser-irradiated. The thrombus formation developed faster in both types of vessels in elder rats. The data obtained suggest an increase of the thrombotic potential of the mesentery microvessels in the course of ageing in rats.