title: Well-defined cell-surface receptors may be entry points for infectious agents.
mesh_terms: D000818:Animals; D004705:Endocytosis; D006801:Humans; D011956:Receptors, Cell Surface / Q000502:physiology*; D011961:Receptors, Fc / Q000502:physiology; D011991:Receptors, Virus / Q000502:physiology*
chemical_list: D011956:Receptors, Cell Surface; D011961:Receptors, Fc; D011991:Receptors, Virus