Ключевые слова: adult, analysis, analyzing, arm, background, bag, ball, blood, body, bouncy, care, clinic, donate, donating, donation, donor, expertise, female, give, hand, healing, health, healthcare, hospital, indoors, injecting, injection, laboratory, male, man, medical, medicine, needle, nurse, patient, people, receiving, red, sample, science, sterile, surgical, syringe, test, transfused, transfusion, volunteer,