cellular ecosystems is a sink of matter for room inactivity
demilitarized_zone is unnatural_thing. cellular_compartment is spatially_bounded_thing. cellular_compartment is organic_matter. cellular_compartment is not organic_matter. biological_absorption_event is not organic_event. cellular_compartment is spatial_thing. cellular_compartment is not spatial_thing. limbic_system is solid_object. cellular_compartment is not spatially_bounded_thing. cellular_compartment is not microscopic_object.