SPENCER SUTTON / SCIENCE PHOTO LIBRARY SPENCER SUTTON / SCIENCE PHOTO LIBRARY
Immune cells (from top left to bottom right): mast cell, basophil, natural killer cell, neutrophil, monocyte, B cell, T cell, macrophage, dendritic cell, and eosinophil. These are all types of leukocyte's; white blood cells that act as a part of the immune system by destroying invading cells and removing cellular debris.
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