Defense mechanism of the greater omentum / 中国病理生理杂志

ABSTRACT

AIM:To observe the distribution of 5'-nucleotidase positive of milky spot and lymphatic vessels in the greater omentum and investigate the defense mechanisms of the greater omentum in another way. METHODS:The whole mount preparations of the greater omentum was stained with enzyme histochemistrical and immunohistochemistrical methods and observed with light microscopy and confocal laser scanning microscopy. RESULTS: Positive reaction was showed in lymphocytes at deep portions of the milky spot. A lot of lymphatic capillaries which had no basement membrane were found in intercellular spaces of adipose cells at superficial portions of the milky spot. CONCLUSION: These findings indicated that the adenosine formed in the milky spot inhibited the action of immunocyte in the milky spot. The lymphatic capillaries in the superficial portions may play some roles with the defense mechanisms of the greater omentum.