Modifiers matching nucleotide:

• natural,
• active,
• endogenous,
• key,
• extracellular,
• cellular,

Simple categories matching cellular:

• component,
• behavior,
• devices,
• matter,
• process,
• material,
• substance,
• characteristic,
• activity,
• morphology,
• pathogen,
• event,
• object,
• state,
• organelle,
• eukaryote,
• injury,
• condition,
• compound,
• reaction,
• level,
• damage,
• abnormality,
• property,
• microorganism,
• modification,
• factor,
• constituent,
• reproduction,
• structure,
• device,
• substrate,
• buffer,
• macromolecule,
• creature,
• action,
• fragment,
• program,
• waste,
• core,
• bacteria,
• body,
• information,
• sample,
• organs,
• telephone,
• disease,
• surface,
• location,
• antioxidant,
• metabolite,
• machine,
• function,
• metabolism,
• irregularity,
• immunity,
• protein,
• particle,
• kinase,
• acid,
• chordate,
• fate,
• organism,
• disorder,
• oxidase,
• pattern,
• control,
• system,
• nucleotide,
• adaptation,
• assembly,
• organization,
• marker,
• requirement,
• solid,
• lipid,
• attribute,
• change,
• hemoprotein,
• pathway,
• foam,
• membrane,
• stimulus,
• stress,
• specimen,
• enzyme,
• cofactor,
• segregation,
• migration,
• polymer,
• therapy,
• mixture,
• pressure,
• integrity,
• activator,
• machinery,
• compartment,
• affliction,
• microbe,
• elastomer,
• feature,
• routine,
• product,
• arrangement,
• response,
• mrna,
• parasite,
• plant,
• pigment,
• fluid,
• area,
• molecule,
• phenomenon,
• motion,
• intermediate,
• investigation,
• phosphatase,
• nutrient,
• region,
• chemical,
• polystyrene,
• signal,
• gene,
• activation,
• mechanism,
• receptor,
• entity,
• situation,
• species,
• movement,
• alteration,
• evidence,
• piece,
• behaviour,
• ligand,
• consequence,
• motility,
• interaction,
• rna,
• trait,
• tissue,
• fiber,