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'''Collar Cells''' are a flagellated [[cell|cells]] that pump water into a sponge.<ref>Wile, Dr. Jay L. ''Exploring Creation With Biology''. Apologia Educational Ministries, Inc. 1998</ref>
'''Collar cells''' are a flagellated [[cell|cells]] that pump water into a sponge.<ref>Wile, Dr. Jay L. ''Exploring Creation With Biology''. Apologia Educational Ministries, Inc. 1998</ref>
==References==
==References==