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mucous membrane
mu·cous mem·brane (plural mu·cous mem·branes)


noun 
Definition:
 
moist passage lining: a moist lining in the body passages of mammals that contains mucus-secreting cells and is open directly or indirectly to the external environment
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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