Most prostaglandins have a mechanism similar to that of steroid hormones.

Name: Most prostaglandins have a mechanism similar to that of steroid hormones.
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Prostaglandins are not steroid hormones and have a different mechanism of action. While steroid hormones enter cells and bind to specific receptors in the cytoplasm or nucleus to affect gene expression, prostaglandins act locally by binding to receptor sites on the surface of cells and activating intracellular signaling pathways.

Most Prostaglandins Have a Mechanism Similar to That of Steroid