Question

cytokines have a select half-life and exert influence on select .

Explanation:

Identify cytokine properties

Cytokines are small, soluble proteins released by cells of both the innate and adaptive immune systems to regulate immune activity. They typically have a very short half-life to prevent prolonged or systemic inflammatory responses, ensuring that immune signaling is tightly controlled and localized.

Determine target cells

Cytokines act as chemical messengers. They can exert their influence on the cell that secreted them (autocrine pathway), on neighboring cells (paracrine pathway), or sometimes travel through the bloodstream to affect distant cells (endocrine pathway). Therefore, they influence both the cells that produce them and other neighboring or distant cells.

Answer:

Cytokines have a <blank>short</blank> half-life and exert influence on <blank>both the cells that produce them and other cells</blank>.