Ключевые слова: adult, analysis, asian, background, bio, biology, business, care, cell, check, chemist, closeup, college, concept, culture, discovery, environment, exam, experiment, family, finger, gesture, girl, glove, hand, health, hospital, human, infection, isolated, japanese, lab, laboratory, love, male, man, measurement, medical, medicine, microbe, people, person, relationship, research, sign, symbol, together, white, woman, young,