Ключевые слова: analyzing, bio, biochemistry, biological, biology, biotechnology, blood, chemical, chemist, chemistry, clinical, closeup, concept, discovering, discovery, dna, doctor, experiment, expertise, glass, gloves, hands, hiv, holding, indoors, lab, laboratory, male, man, medical, medicine, microbiology, molecular, molecule, people, person, pipette, professional, protective, research, researcher, researching, sample, science, scientific, scientist, specialist, structure, test, tube,