Summary
Two mast cell populations, connective tissue mast cells (CTMCs) and mucosal mast cells, (MMCs) containing different proteoglycans in their granules, can be distinguished in several animal species by means of histochemical methods. In this study we documented the presence of these two types of mast cell in the chick embryo lung, from the 15th incubation day for the MMCs, and from the 18th incubation day for the CTMCs. Lungs of embryos treated with compound 48/ 80, which produces degranulation of the CTMCs, showed a decrease in the number of this type of mast cell and an unchanged number of MMCs. In the lungs of embryos treated with dexamethasone, which degranulates MMCs, a reduction in the number of these cells and an unchanged number of the CTMs were found.
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Ribatti, D., Contino, R., Quondamatteo, F. et al. Mast cell populations in the chick embryo lung and their response to compound 48/80 and dexamethasone. Anat Embryol 186, 241–244 (1992). https://doi.org/10.1007/BF00174145
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DOI: https://doi.org/10.1007/BF00174145