title: Pen injectors for insulin.
mesh_terms: D006801:Humans; D007279:Injections, Subcutaneous / Q000295:instrumentation*; D007328:Insulin / Q000008:administration & dosage*; D010353:Patient Education as Topic; D013594:Syringes / Q000145:classification / Q000191:economics / Q000592:standards*
chemical_list: D007328:Insulin