Modifiers matching membrane:

• resonant,
• active,
• collagenous,
• heterogeneous,
• biological,
• sensitive,
• impervious,
• internal,
• impermeable,
• flexible,
• excitable,
• elastic,
• multicellular,
• protective,
• refractory,
• waterproof,
• pliable,
• homogeneous,
• vascular,
• nonporous,
• continuous,
• warm,
• imperforate,
• intact,
• natural,
• porous,
• mucous,
• circular,
• logical,
• thin,
• biologic,
• inorganic,
• intracellular,
• permeable,
• mucosal,
• cellular,
• macromolecular,
• epithelial,
• moist,
• proteinaceous,
• fetal,
• thick,
• metallic,
• synthetic,
• extracellular,

Simple categories matching biologic:

• trait,
• surface,
• fluid,
• secretion,
• material,
• activity,
• medication,
• system,
• process,
• therapy,
• origin,
• difference,
• variable,
• molecule,
• change,
• polymer,
• sealant,
• marker,
• tissue,
• intervention,
• organism,
• condition,
• muscle,
• necessity,
• mixture,
• sample,
• macromolecule,
• aggregate,
• agent,
• event,
• liquid,
• substance,
• information,
• reaction,
• area,
• measure,
• component,
• product,
• action,
• behavior,
• consequence,
• matter,
• membrane,
• factor,
• glue,
• constituent,
• community,
• mechanism,
• derivative,
• drug,
• pattern,
• phenomenon,
• structure,
• entity,
• substrate,
• ingredient,
• response,
• particle,
• matrix,
• property,
• contaminant,
• compound,
• medium,