The fine structure of human nasal sero-mucinous glands was studied in 15 chronic allergic patient. There was total absence of the mucous glands, and proliferation of seroud elements, with hugely dilated lumina containing large numbers of intact zymogen granules, and absence of microvilli. The relation between the goblet cells and the nasal glands was discussed. An interchange between the serous and mucous elements was deduced.
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Toppozada et al. (2010) studied this question.
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