EOG8W6R8T GO:0005615 6/22 extracellular space cellular_component "That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid." [ISBN:0198547684] EOG8W6R8T GO:0004866 4/22 endopeptidase inhibitor activity molecular_function "Stops, prevents or reduces the activity of an endopeptidase, any enzyme that hydrolyzes nonterminal peptide bonds in polypeptides." [GOC:jl]