title: Host-parasite interaction.
mesh_terms: D001766:Blindness / Q000209:etiology; D009877:Endophthalmitis / Q000209:etiology; D006790:Host-Parasite Interactions; D006801:Humans; D009854:Onchocerca / Q000502:physiology; D009855:Onchocerciasis / Q000276:immunology / Q000469:parasitology; D014119:Toxocara / Q000502:physiology; D014120:Toxocariasis / Q000276:immunology / Q000469:parasitology; D014122:Toxoplasma / Q000502:physiology; D014123:Toxoplasmosis / Q000276:immunology / Q000469:parasitology