Inflammatory chemicals cause arterioles to ________________ andincreased capillary ___________________________. The group of 20plasma proteins that are part of the 2nd and 3rd lines of defenseis called _________________________ and it assists in destroyingforeign substances. ___________________ are specialized lymphaticvessels that absorb fat. The ______________, a primary lymphoidorgan, is the site for differentiation of lymphocytes into mature Tcells. It ___________ as we age. In humoral immunity, specific Bcells called ______________ cells secrete ______________, whichbind to antigens. ____________ immunity is directed againstpathogens in the extracellular fluid. This immunity involves ____lymphocytes. ______________ immunity is directed against pathogenswithin the cells. This immunity involves ____ lymphocytes. NK cellskill like ______________ T cells; direct contact with a target cellcauses it to undergo ______________, a form of cellular suicide.___________________ occurs in the arm after axillary lymph noderemoval in a mastectomy.