Modifiers matching ligand:

• external,
• biological,
• natural,
• additional,
• hydrophobic,
• strong,
• important,
• weak,
• acidic,
• lipophilic,
• polar,
• psychoactive,
• exogenous,
• cellular,
• environmental,
• common,
• small,
• active,
• ionic,
• functional,
• physiological,
• simple,
• nonmetal,
• axial,
• anionic,
• organic,
• uncharged,
• nonsteroidal,
• binding,
• physiologic,
• bound,
• endogenous,
• complex,
• potent,
• charged,
• extracellular,
• base,
• soft,
• ancillary,
• hydrophilic,
• neutral,
• inorganic,
• atomic,
• synthetic,
• relevant,
• complementary,
• hard,
• metal,
• psychedelic,
• cationic,

Simple categories matching binding:

• material,
• agent,
• waste,
• machine,
• atom,
• medium,
• activity,
• water,
• instrument,
• monosaccharide,
• fastener,
• document,
• matter,
• protein,
• theme,
• means,
• entity,
• mineral,
• group,
• substrate,
• contract,
• compound,
• assay,
• macromolecule,
• metal,
• work,
• residue,
• law,
• fabric,
• pair,
• agreement,
• ligand,
• papers,
• mechanism,
• proteinase,
• substance,
• commitment,
• interaction,
• reaction,
• action,
• resin,
• event,
• force,
• process,
• phenomenon,
• property,
• service,
• parameter,
• characteristic,
• power,
• molecule,
• ingredient,
• trait,
• liquid,
• component,
• information,
• device,
• carrier,
• system,
• practice,