The soapbark tree, Quillaja saponaria; the bark of this tree used as a source of saponin

(immunology) A mixture of very many peptides having closely-related sequences, designed as a synthetic vaccine in cases of hypervariability

N,N,N′,N′-tetramethyl-p-phenylenediamine, an easily oxidized phenylenediamine whose radical cation is a characteristic blue-violet colour.

plural of incarceration