Ключевые слова: alone, aluminum, analysis, biochemical, biochemist, biochemistry, blood, caucasian, centrifuge, clinical, cropped, doctor, female, fixedangle, indoors, inside, lab, laboratory, lady, machine, medical, medicine, one, person, photo, placing, redtop, research, rotor, sample, science, scientific, scientist, specimen, study, technician, tube, using, vacutainer, woman, work,