Ключевые слова: adult, analysis, antibodies, arm, blood, blue, care, caucasian, clinic, closeup, cutout, doctor, donation, draw, female, flu, glove, hand, health, hospital, influenza, injecting, injection, isolated, man, medical, medicine, needle, nurse, patient, people, person, pharmaceutical, polio, protection, sample, shoulder, sterile, syringe, technology, test, tetanus, tuberculosis, vaccine, vein, white, woman, women, worker,