Modifiers matching membrane:

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

Simple categories matching proteinaceous:

• material,
• substance,
• fiber,
• meat,
• carrier,
• matrix,
• adhesive,
• stain,
• feed,
• structure,
• molecule,
• substrate,
• food,
• macromolecule,
• binder,
• part,
• fibre,
• component,
• drug,
• medium,
• fluid,
• antigen,
• polymer,
• membrane,
• surface,
• content,
• compound,
• agent,
• catalyst,