Modifiers matching parasite:

• external,
• major,
• waterborne,
• internal,
• infective,
• real,
• pathogenic,
• enteric,
• zoonotic,
• intracellular,
• larger,
• macroscopic,
• prokaryotic,
• intestinal,
• predatory,
• microscopic,
• bloodsucking,
• pesky,
• secondary,
• protozoal,
• multicellular,
• opportunistic,
• destructive,
• cellular,
• smaller,
• haematological,
• unicellular,
• common,
• small,
• animal,
• boring,
• complex,
• functional,
• out,
• outside,
• invertebrate,
• visible,
• bad,
• obligate,
• possible,
• large,
• related,
• bacterial,
• molecular,
• harmful,
• important,
• aquatic,
• unwanted,
• infectious,
• nasty,
• microbial,
• dangerous,
• extracellular,
• mobile,
• organic,
• eukaryotic,
• invasive,
• tiny,
• mutable,

Simple categories matching intestinal:

• flora,
• change,
• disease,
• parasite,
• complication,
• infection,
• bacteria,
• bug,
• constituent,
• lesion,
• malady,
• cancer,
• process,
• worm,
• track,
• microorganism,
• malignancy,
• detritus,
• distress,
• pathogen,
• fluid,
• secretion,
• yeast,
• complaint,
• anaerobe,
• problem,
• bacillus,
• material,
• helminth,
• symptom,
• sterol,
• affliction,
• upset,
• disorder,
• illness,
• absorption,
• infarction,
• injury,
• discomfort,
• microbe,
• microflora,
• inflammation,
• organism,
• propulsion,
• agent,
• pathology,
• condition,
• species,
• tumor,
• nematode,
• protease,
• component,
• neoplasm,
• virus,
• genus,
• substance,
• activity,