Ключевые слова: blood, blood donation, blood donor, care, caregiver, charity, children, concept, donate, donation, donor, drop, give, good health, good mood, hand, happiness, happy, health, health care, health day, healthy, heart, help, hold, holding, hope, human hand, life, love, medical, medicine, organ, patient, protection, red, relief, service, social, solidarity, support, symbol, thankful, volunteer,