Modifiers matching ligand:

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

Simple categories matching cationic:

• agent,
• metal,
• carrier,
• anesthetic,
• drug,
• compound,
• group,
• reactant,
• substance,
• system,
• surfactant,
• antiseptic,
• polymer,
• material,
• antibiotic,
• anaesthetic,
• ion,
• current,
• salt,
• ligand,
• mineral,
• catalyst,
• component,
• marker,
• medication,
• contaminant,
• chemical,
• lipid,