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| + | Microtubules are spiral strands of [[protein]] [[molecules]] that form a rope-like structure.<ref>Wile, Dr. Jay L. ''Exploring Creation With Biology''. Apologia |
| | + | Educational Ministries, Inc. 1998</ref> |
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| | + | ==References== |
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| | + | <references/> |
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| | + | [[Category:Biology]] |