The invention relates to a combined pharmaceutical composition or pharmaceutical preparation, comprising a first component containing a first ligand for a polyspecific lectin in a reticuloendothelial cell and a second component containing a carrier, a labeling agent, or a medicament for treating a disease associated with a target cell, each of which is targeted by a second ligand for a polyspecific lectin in a reticuloendothelial cell different from the first ligand, and also relates to a method for labeling a target cell and a method for treating a disease associated with a target cell, each using the same.