Ключевые слова: analyzing, arm, bag, blood, blood donation, blood donor, care, caucasian, clinic, donate, donation, donor, expertise, giving, hand, healing, health, health care, hematologic, hematology, hemotransfusion, hospital, indoors, injecting, instrument, laboratory, life, male, man, medical, medicine, needle, nurse, patient, person, physician, public, science, service, sterile, surgical needle, syringe, system, technician, transfused, transfusion, tube, tubing, volunteer, woman,