Ключевые слова: analysis, biochemistry, biology, biotechnology, button, cell, centrifuge, chemistry, clinic, clinical, closeup, culture, deoxyribonucleic acid, dna, doctor, e coli, equipment, experiment, extract, extraction, glove, hand, hospital, lab, laboratory, machine, medical, medicine, method, methodology, microbiology, oncology, people, person, plasma, preparation, process, research, researcher, rotate, sample, science, scientific, scientist, separation, sterile, technology, test, test tube, tube,