Abstract
To compare the blood supply of the Peyer's patches in pigs with the already defined rodent one. Pig tissue was used. Injections of india ink, microscopic examination of the histological preparations stained by a haematoxylin - eosin and scanning electron microscopy of the corrosive casts were used for the depiction of the vessels. A model of the blood microcirculation of PP and its relation to the blood circulation of the small intestine was created. Only the capillaries in the follicles, but not the ascending arterioles as in rats were found.
Highlights
MATERIALS AND METHODSAggregated lymphoid nodules – Peyer’s Patches (PP) are secondary lymphoid organs in the small intestine, which are components of the gut – associated lymphoid tissue
There was an irregular circuit around the periphery of PP, which was associated with several branches (Fig. 1)
During the process of scanning electron microscopy (SEM) we have observed, that these circular veins had common parts, which were in a contact (Fig. 2)
Summary
Aggregated lymphoid nodules – Peyer’s Patches (PP) are secondary lymphoid organs in the small intestine, which are components of the gut – associated lymphoid tissue. Domestica) have, on average, 10–15 Peyer’s Patches in their small intestine.[1] The blood PP supply originates from the superior mesenteric artery via jejunal and ileal arteries and the ileocolic artery. The blood microcirculation has been described at rats, guinea pigs and rabbits.[2,3,5] The purpose of our study was to compare the blood supply of PP in pigs with already defined rodent ones.
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