Ключевые слова: arm, bag, blood, blood bag, blood donation, blood donor, chair, clinic, clinical, closeup, detail, donate, donation, donor, emergency, equipment, giving, hand, healing, health, health care, healthcare, help, horizontal, hospital, indoors, laboratory, lying, medical, medicine, palm, patient, people, person, positive, receiving, red, rubber, sample, squeeze, squeeze ball, sterile, transfusion, tube, volunteer, volunteering, young,