Ключевые слова: adult, arm, biomedics, blood, blood bag, blood donation, blood type, care, caucasian, chair, charity, clinic, closeup, comfort, donation, donor, drop, give, hand, healthcare, heart, holding, hospital, illness, laboratory, life, male, man, medical research, medical sample, medicine, patient, people, plasma, pump, red, relax, research, save, science, scientific experiment, squeeze, stress toy, supply, test, therapy, transfusion, volunteer, young,