basement membrane

(redirected from basement lamina)
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basement membrane

n.
A thin noncellular layer located between epithelial cells and the connective tissue that underlies them, composed of collagen and other proteins and having a variety of functions including support and filtration.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

base′ment mem`brane


n.
a thin, extracellular membrane underlying epithelial tissue.
[1840–50]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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We regard the above-mentioned "basophilic stippling" of villous basement lamina a nonspecific finding which is usually positive for iron; hence we call it ferrugination [19].