Modifiers matching antigen:

• foreign,
• outside,
• exogenous,
• extrinsic,
• simple,
• extraneous,
• strong,
• internal,
• free,
• bacterial,
• possible,
• indoor,
• harmless,
• environmental,
• single,
• microbial,
• dangerous,
• diverse,
• noninfectious,
• active,
• viral,
• particulate,
• peripheral,
• innocuous,
• oral,
• main,
• infectious,
• harmful,
• small,
• perennial,
• several,
• soluble,
• endogenous,
• lethal,
• nutritional,
• outdoor,
• proteinaceous,

Simple categories matching peripheral:

• equipment,
• arrangement,
• subject,
• circuit,
• tissue,
• instrumentation,
• medium,
• sample,
• device,
• area,
• instrument,
• connection,
• skill,
• drive,
• joint,
• article,
• cell,
• organ,
• appliance,
• injury,
• garment,
• system,
• hardware,
• model,
• articulation,
• installation,
• item,
• unit,
• part,
• vessel,
• muscle,
• hospital,
• controller,
• antigen,
• market,
• ballast,
• key,
• country,
• timer,
• fluid,
• organization,
• nerve,
• environment,
• measure,
• issue,
• block,
• process,
• damage,
• program,
• card,
• interface,
• gadget,
• condition,
• means,
• signal,
• store,
• neuropathy,
• position,
• street,
• cavity,
• neuron,
• neoplasm,
• form,
• component,
• apparatus,
• palsy,
• feature,
• blood,
• extremity,
• assembly,
• event,
• effector,
• tool,
• sound,
• personnel,
• location,
• agent,
• region,
• operations,
• workstation,
• material,
• pulse,
• industry,
• hormone,
• procedure,
• duty,
• tumor,
• accessory,
• matrix,
• thing,
• highway,
• science,
• stimulus,
• shape,
• discipline,
• job,
• works,
• action,
• sensor,
• line,
• cue,
• topic,
• ganglion,
• injection,
• information,
• object,
• module,
• organs,
• attribute,
• nerves,
• space,
• machine,
• magazine,
• construction,
• service,
• labor,
• structure,
• server,
• facility,
• land,
• edge,
• surgery,
• vein,
• surface,
• mechanism,
• devices,
• site,
• change,
• matter,
• effort,
• insertion,
• fixture,
• anomaly,
• lesion,
• symptom,
• receptor,
• assets,
• building,
• circuitry,
• business,
• gear,
• activity,
• artery,
• product,
• infrastructure,
• tumour,
• wall,
• portion,