Question

multiple choice question
cytokines usually bind to receptors of

o cells of another organ from which are were secreted
o neighboring cells

Explanation:

Cytokines are signaling molecules. They can act on cells in autocrine (same - cell), paracrine (neighboring cells), or endocrine (distant organs) manners. But they usually act on neighboring cells in a paracrine fashion by binding to their receptors.

Answer:

neighboring cells