L-alpha-Aminobutyric acid also known as (S)-2-aminobutanoic acid homoalanine 2-AABA ethylglycine or L-butyrine is a member of the class of compounds known as L-alpha-amino acids.

InsB (9-23) is an insulin B-chain peptide that binds to a class II histocompatibility complex (MHC) allele called I-Ag7.

Angiotensin 1 (Human) is the precursor to the vasoconstrictor peptide angiotensin II, cleaved by the angiotensin-converting enzyme (ACE).Angiotensin is a peptide hormone that causes vasoconstriction and an increase in blood pressure.