a protein complex combining amino acids with other substances

a nitrogenous substance found in mucous secretions; a lubricant that protects body surfaces

a glycoprotein secreted by the kidneys that stimulates the production of red blood cells

a glycoprotein that is found primarily on the surface of helper T cells

a membrane glycoprotein that is found primarily on the surface of cytotoxic T cells

any of several plant glycoproteins that act like specific antibodies but are not antibodies in that they are not evoked by an antigenic stimulus