Valnemulin HCl is a broad-spectrum bacteriostatic agent inhibiting protein synthesis in bacteria by binding to the peptidyl transferase component of the 50S subunit of ribosomes.

Gamma-MSH (Melanocyte Stimulating Hormone), a putative hormone in the N-terminal region of the ACTH/beta- endorphin (beta-EP) precursor protein, was studied by RIA with an antiserum against gamma 3-MSH in ACTH-producing mouse pituitary tumor cells, AtT-20/D16v.

Somatostatin-28 (1-12) is a somatostatin fragment which is monitored in brain tissue to track processing of somatostatin.