Assertion: adaptive immune system | /r/HasProperty | t-cells
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Source sentences:
text: The professional phagocytes (macrophage and dendritic cells) process the antigen and leave the site of infection via the lymphatic system; Dendritic cells travel to the lymph nodes or other secondary lymphatic tissue sites where they activate the adaptive immune system (T-cells and B-cells); T cells travel back to the infection and kill the pathogen, while B cells produce antibodies that bind to the pathogen; Infection is eliminated; and Memory T and B cells wait in the lymph nodes for the next infection.