1220x1263pximmune system response, virus and bacteria interaction, antibody production, protein structure in immune defense, pathogen visualization, cellular immunity, microorganism illustration
1378x1352pxneutrophil antibody, immune system white blood cells, white blood cell neutrophil, blood cell immune response, cellular immunity, medical microbiology, pathogen defense mechanism
659x659pxlymphocyte white blood cell, lymph node illustration, human immune system, purple lymphocyte cell, cellular immunity, medical biology diagram, immunology study image
