Final answer:
Tumor necrosis factor-alpha (TNF-α) is the cytokine responsible for attracting neutrophils to sites of tissue damage or infection, playing a key role in inflammatory responses.
Step-by-step explanation:
The cytokine that attracts neutrophils to the site of tissue damage or infection is Tumor necrosis factor-alpha (TNF-α). TNF-α is known as a principal mediator in acute inflammatory responses to infections, particularly those caused by gram-negative bacteria. It signals to immune cells that an infection is in progress and is crucial in the recruitment and activation of neutrophils to phagocytose pathogens at the infection site.