Modifiers matching receptor:

• traditional,
• functional,
• suitable,
• sensory,
• sensitive,
• environmental,
• peripheral,
• endogenous,
• complicated,
• active,
• abstract,
• nuclear,
• soluble,
• anatomical,
• chemical,
• external,
• steroidal,
• organic,
• related,
• diverse,
• specialised,
• articular,
• intracellular,
• additional,
• inhibitory,
• antigenic,
• cellular,
• specialized,
• local,
• discrete,
• distal,

Simple categories matching antigenic:

• polymer,
• peptide,
• protein,
• receptor,
• substance,
• material,
• molecule,
• compound,
• constituent,
• preparation,
• agent,
• substrate,
• property,
• component,
• carrier,
• stimulation,
• macromolecule,