Assertion: antigen | /r/HasProperty | peptide
Facets:
value: usually
type: DEGREE
Source sentences:
text: If the antigen is a peptide, it is commonly synthesized with a terminal cysteine, which allows selective attachment to a carrier protein, such as KLH during development and to support purification.
text: Antigens are usually proteins, peptides (amino acid chains) and polysaccharides (chains of monosaccharides/simple sugars) but lipids and nucleic acids become antigens only when combined with proteins and polysaccharides.
text: Antigens are typically proteins, peptides, or polysaccharides.
text: Antigens are usually either proteins, peptides, or polysaccharides.