 Other possibilities exist , as well . For example , <unk> usually utilizes an antibody to one or more proteins of interest that are conjugated to enzymes yielding either <unk> or <unk> signals that can be compared between samples , allowing for localization information . Another applicable technique is <unk> in <unk> ( or other material ) <unk> using <unk> <unk> . While this technique does not prove <unk> of a compartment of known density and the protein of interest , it does increase the likelihood , and is more amenable to large @-@ scale studies . 
