Tesamorelin is a synthetic peptide analog of growth hormone–releasing hormone (GHRH) that is widely studied in laboratory environments for its interaction with endocrine signaling pathways. Structurally designed to mimic the activity of naturally occurring GHRH, Tesamorelin is used in research models to explore mechanisms related to growth hormone regulation and peptide-receptor signaling.

Semax is a synthetic peptide derived from a fragment of adrenocorticotropic hormone (ACTH) that is widely studied in neuroscience and peptide signaling research. The compound is designed to interact with regulatory pathways involved in neurochemical communication, making it a subject of interest in laboratory models examining brain-related signaling mechanisms.