organism: metagenome
attributes.tag: isolate
attributes.value: negative controlwithout sample2
attributes.tag: host
attributes.value: none2
attributes.tag: isolation_source
attributes.value: PBS(without sample)
attributes.tag: collection_date
attributes.value: 2025-12-09
attributes.tag: geo_loc_name
attributes.value: China:Guangzhou
attributes.tag: sample_type
attributes.value: Blank sample2
attributes.tag: lat_lon
attributes.value: missing
attributes.tag: BioSampleModel
attributes.value: Metagenome or environmental