Assertion: immune system's cell | /r/CapableOf | engulf foreign material
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Source sentences:
text: When tissue grafts are made in animals higher up the evolutionary tree—between individual annelid worms or starfish , for example—the foreign tissue is commonly invaded by phagocytic cells (cells that engulf and destroy foreign material) and cells resembling lymphocytes (white blood cells of the immune system), and it is destroyed.