drop of blood from puzzles in hands, as metaphor for donation and fight against cancer

blood donor leukemia hemophilia transfusion medicine emergency healthcare cancer hemoglobin drop hands treatment care day medical doctor laboratory support infection ambulance awareness help volunteer disease health plasma heart group therapy hospital anemia thrombocytopenia hemolytic lymphoma myeloma thrombosis hemorrhagic healing hemoglobinopathy clinic donation mercy rescue human vector illustration person isolated concept