Glutamine
In human blood, glutamine is the most abundant free amino acid.
Casamino acid
Casamino acids are either found in the Daptacel brand DTaP vaccine or used in its manufacture.
Casamino acid is a hydrochloric acid hydrolysate of casein. It supplies a completely hydrolyzed protein nitrogen source. It contains a small amount of cystine. Tryptophan and vitamins are destroyed by the acid treatment. The remaining amino acids (in varying amounts) are a source of nutrients for various microorganisms. Amino acids are highly soluble and suitable for use in tissue culture. Salt content is typically 30-40%.