Final answer:
Chemokines include IL-8, CXCL-1, and CXCL-2, which are cytokines involved in chemotaxis. TNF-α is a cytokine but not a chemokine.
Step-by-step explanation:
Examples of chemokines include IL-8, CXCL-1, and CXCL-2. These chemotactic cytokines play a crucial role in recruiting specific subsets of leukocytes to infections, damaged tissue, and sites of inflammation. They are produced by a variety of cells and are key players in the body's early induced responses as well as during adaptive immune responses.
However, TNF-α (Tumor Necrosis Factor-alpha) is not a chemokine; it is a distinct cytokine known for its role in inflammation and immune system regulation, which can have phagocytic activity and produce chemicals promoting inflammation.