cell part cell part obsolete cell part true CL:0000000 GO:0044464 Note that this term is in the subset of terms that should not be used for direct gene product annotation. Instead, select a child term or, if no appropriate child term exists, please request a new term. Direct annotations to this term may be amended during annotation QC. protoplast OBSOLETE. Any constituent part of a cell, the basic structural and functional unit of all organisms. cellular_component cellular subcomponent NIF_Subcellular:sao628508602