Akademik Veri Yönetim Sistemi
Veteriner Hekimler Derneği Dergisi, cilt.93, sa.1, ss.1-8, 2022 (Hakemli Dergi)
Mast cells are found close to surfaces that interface with the external environment, particularly the skin, respiratory, and digestive systems. The number of mast cells at a given site can vary depending on the host's location and immunologic status. This study was undertaken to determine the number of mast cells and their heterogeneity in broilers' ileum during the post-hatching period. The number and heterogeneity of mast cells were studied in the ileum tissue of 0-, 7-, 21- and 42-day old broilers. Mast cells were stained metacromasically with toluidine blue in all groups. Mast cells were observed in all the ileum layers, mainly in the lamina propria of the mucosa and submucosa. They were also observed in connective tissue around capillaries and between smooth muscle cells in the tunica muscularis layer. Both blue-colored AB (+) and red-pink-colored SO (+) mast cell subtypes were seen in the ileum. AB (+) mast cells were observed in all age groups, whereas no SO (+) mast cells were found in the 0- age group. SO (+) mast cells were first detected in the ileum tissue on the seventh day after post-hatching. As a result, the number of mast cells was found to increase with age, which was statistically significant.