Modifiers matching receptor:

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

Simple categories matching soluble:

• enzyme,
• fraction,
• material,
• substance,
• saccharide,
• element,
• compound,
• portion,
• sugar,
• hydroxide,
• stain,
• salt,
• fluid,
• hydrocarbon,
• starch,
• solvent,
• fiber,
• volatile,
• macromolecule,
• carbohydrate,
• starches,
• formulation,
• deposit,
• protein,
• monomer,
• oligosaccharide,
• rock,
• constituent,
• molecule,
• alcohol,
• solid,
• metal,
• polymer,
• food,
• carbonyl,
• agent,
• substrate,
• electrode,
• liquid,
• fibre,
• residue,
• alkaloid,
• matter,
• catalyst,
• dirt,
• waste,
• metabolite,
• entity,
• toxin,
• item,
• powder,
• solute,
• mineral,
• size,
• nickel,
• atom,
• fuel,
• surfactant,
• fertilizer,
• system,
• oil,
• impurity,
• group,
• filler,
• chemical,
• component,
• gas,
• pesticide,
• soil,
• sweetener,
• vitamin,
• amine,
• contaminant,
• part,
• stabilizer,
• oxide,
• sulphate,
• precursor,
• alkane,
• polysaccharide,
• receptor,
• resin,
• drug,
• derivative,
• lubricant,
• coagulant,
• nitrate,
• carrier,
• gum,
• pollutant,
• adhesive,
• beverage,
• hormone,
• fertiliser,
• hydrocolloid,
• antioxidant,
• nutrient,
• concentration,
• sulfate,
• medium,
• antigen,
• preparation,
• tracer,
• particle,
• chloride,
• sulphide,
• phenol,
• fluoride,
• salicylate,