Ключевые слова: aid, alternative, animal, background, being, big, biology, bite, black, blood, bloodsucking, body, cure, dangerous, disease, fringe, healing, health, healthcare, histamine, illness, insect, invertebrate, isolated, leech, lifestyle, macro, magnification, medical, medicine, monster, nature, one, parasitic, science, skin, small, stained, suck, sucked, swamp, therapy, treatment, wet, white, wildlife, worm, young,