Ключевые слова: adult, arm, ball, beneficence, blood, blood bank, blood donation, bouncy, care, catheter, caucasian, charity, clinic, doctor, donate, donating, donation, donor, dose, expertise, female, give, hand, happy, health, healthcare, heart, help, hospital, indoors, injecting, laboratory, life, lifestyles, medical, medical sample, medicine, needle, patient, people, plasma, red, squeeze, sterile, syringe, test, transfusion, vein, volunteer, woman,