SRS693648 SAMN03015971 749906 gut metagenome bioproject 260105 PRJNA260105 collection_date 2013 env_biome biome env_feature excreta env_material feces geo_loc_name United Arab Emirates host Camelus dromedarius lat_lon 25.1742 N 55.4128 E BioSampleModel MIMS.me BioSampleModel MIGS/MIMS/MIMARKS.host-associated