Fri July 29, 2011 By: Aditya Garg

what is cell lumen? and what is lignin?

Expert Reply
Sat July 30, 2011
Lumen refers to any cavity enclosed within a cell or any structure like gut. Even space within the organelles is referred to as lumen.
Lignin is a complex organic polymer deposited in the cell walls of many plants, making them rigid and woody.
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