cell cell A material entity of anatomical origin (part of or deriving from an organism) that has as its parts a maximally connected cell compartment surrounded by a plasma membrane. CL and GO definitions of cell differ based on inclusive or exclusive of cell wall, etc. PMID:18089833.Cancer Res. 2007 Dec 15;67(24):12018-25. "...Epithelial cells were harvested from histologically confirmed adenocarcinomas .." We struggled with this definition. We are worried about circularity. We also considered requiring the capability of metabolism. material anatomical entity