γ-Linolenic acid is an unsaturated fatty acid synthesized from linoleic acid (LA) by the enzyme delta-6-desaturase.

Fluorescamine ( Ro 20-7234) is not fluorescent itself but reacts with primary amines to form highly fluorescent products. It is used to detect amines and peptides.

[Sar1, Ile8]-Angiotensin II is a peptide that has multiple effects on vascular smooth muscle, including contraction of normal arteries and hypertrophy or hyperplasia of cultured cells or diseased vessels. The biological activities of angiotensin II antagonists upon basal and angiotensin II-stimulated aldosterone production were evaluated in an isolated canine glomerulosa cell preparation.