Ключевые слова: adult, apple, biotechnology, brush, caucasian, cleaning, clinic, clinical, closeup, coat, concept, conceptual, doctor, fruit, gingiva, gingival, green, gum, gums, hands, holding, lab, laboratory, man, medic, medicine, mucogingival, physician, professional, quarantine, red, scientist, service, smooth, soft, teeth, test, tooth brush, toothbrush, uniform, white, white coat,