abstract background biology blood blood cells body carbon dioxide cell count circulation concept corpuscle design disease erythrocyte fill graphic haemoglobin health hemoglobin illness iron macrocyte medicine megaloblast megalocyte microscopic New original oxygen platelets red red blood cells render science sickness style texture transfusion unique vector analyse backdrop bacteria blood analysis cells cleaning clusters color colour contamination culture disinfect germs green health care immune immune system immunity infection medical microbes mitosis pathogens petri dish probiotics sample slides swab test tissue unclean virus dez pain multicolored multicoloured xymonau Ebola biological biotech bone fat fatty industry marrow microscope sveres technology care cell chemical chemicals drop exam healthcare hiv hospital illustration laboratorium liquid medic microbe petri petri-dish forms life minute patterns symmetry tiny unicellular magnification micro onion plant mitosis root summit