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        <TAG>geo_loc_name</TAG>
        <VALUE>Namibia</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>host</TAG>
        <VALUE>not applicable</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>lat_lon</TAG>
        <VALUE>23.73 S 15.77 E</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>replicate</TAG>
        <VALUE>biological replicate 6</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIMS.me</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIGS/MIMS/MIMARKS.plant-associated</VALUE>
      </SAMPLE_ATTRIBUTE>
    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
  <SAMPLE alias="Wf26" accession="SRS3550368">
    <IDENTIFIERS>
      <PRIMARY_ID>SRS3550368</PRIMARY_ID>
      <EXTERNAL_ID namespace="BioSample">SAMN09661650</EXTERNAL_ID>
    </IDENTIFIERS>
    <SAMPLE_NAME>
      <TAXON_ID>410658</TAXON_ID>
      <SCIENTIFIC_NAME>soil metagenome</SCIENTIFIC_NAME>
    </SAMPLE_NAME>
    <SAMPLE_LINKS>
      <SAMPLE_LINK>
        <XREF_LINK>
          <DB>bioproject</DB>
          <ID>481154</ID>
          <LABEL>PRJNA481154</LABEL>
        </XREF_LINK>
      </SAMPLE_LINK>
    </SAMPLE_LINKS>
    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
        <VALUE>2017-04</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>env_biome</TAG>
        <VALUE>Sandy desert</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>env_feature</TAG>
        <VALUE>Dune</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>env_material</TAG>
        <VALUE>Unvegetated bulk soil</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>Namibia</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>host</TAG>
        <VALUE>not applicable</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>lat_lon</TAG>
        <VALUE>23.73 S 15.77 E</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>replicate</TAG>
        <VALUE>biological replicate 5</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIMS.me</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIGS/MIMS/MIMARKS.plant-associated</VALUE>
      </SAMPLE_ATTRIBUTE>
    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
  <SAMPLE alias="Wf25" accession="SRS3550369">
    <IDENTIFIERS>
      <PRIMARY_ID>SRS3550369</PRIMARY_ID>
      <EXTERNAL_ID namespace="BioSample">SAMN09661649</EXTERNAL_ID>
    </IDENTIFIERS>
    <SAMPLE_NAME>
      <TAXON_ID>410658</TAXON_ID>
      <SCIENTIFIC_NAME>soil metagenome</SCIENTIFIC_NAME>
    </SAMPLE_NAME>
    <SAMPLE_LINKS>
      <SAMPLE_LINK>
        <XREF_LINK>
          <DB>bioproject</DB>
          <ID>481154</ID>
          <LABEL>PRJNA481154</LABEL>
        </XREF_LINK>
      </SAMPLE_LINK>
    </SAMPLE_LINKS>
    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
        <VALUE>2017-04</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>env_biome</TAG>
        <VALUE>Sandy desert</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>env_feature</TAG>
        <VALUE>Dune</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>env_material</TAG>
        <VALUE>Unvegetated bulk soil</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>Namibia</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>host</TAG>
        <VALUE>not applicable</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>lat_lon</TAG>
        <VALUE>23.73 S 15.77 E</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>replicate</TAG>
        <VALUE>biological replicate 4</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIMS.me</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIGS/MIMS/MIMARKS.plant-associated</VALUE>
      </SAMPLE_ATTRIBUTE>
    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
  <SAMPLE alias="Wf24" accession="SRS3550370">
    <IDENTIFIERS>
      <PRIMARY_ID>SRS3550370</PRIMARY_ID>
      <EXTERNAL_ID namespace="BioSample">SAMN09661648</EXTERNAL_ID>
    </IDENTIFIERS>
    <SAMPLE_NAME>
      <TAXON_ID>410658</TAXON_ID>
      <SCIENTIFIC_NAME>soil metagenome</SCIENTIFIC_NAME>
    </SAMPLE_NAME>
    <SAMPLE_LINKS>
      <SAMPLE_LINK>
        <XREF_LINK>
          <DB>bioproject</DB>
          <ID>481154</ID>
          <LABEL>PRJNA481154</LABEL>
        </XREF_LINK>
      </SAMPLE_LINK>
    </SAMPLE_LINKS>
    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
        <VALUE>2017-04</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>env_biome</TAG>
        <VALUE>Sandy desert</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>env_feature</TAG>
        <VALUE>Dune</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>env_material</TAG>
        <VALUE>Unvegetated bulk soil</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>Namibia</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>host</TAG>
        <VALUE>not applicable</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>lat_lon</TAG>
        <VALUE>23.73 S 15.77 E</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>replicate</TAG>
        <VALUE>biological replicate 3</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIMS.me</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIGS/MIMS/MIMARKS.plant-associated</VALUE>
      </SAMPLE_ATTRIBUTE>
    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
  <SAMPLE alias="Wf23" accession="SRS3550371">
    <IDENTIFIERS>
      <PRIMARY_ID>SRS3550371</PRIMARY_ID>
      <EXTERNAL_ID namespace="BioSample">SAMN09661647</EXTERNAL_ID>
    </IDENTIFIERS>
    <SAMPLE_NAME>
      <TAXON_ID>410658</TAXON_ID>
      <SCIENTIFIC_NAME>soil metagenome</SCIENTIFIC_NAME>
    </SAMPLE_NAME>
    <SAMPLE_LINKS>
      <SAMPLE_LINK>
        <XREF_LINK>
          <DB>bioproject</DB>
          <ID>481154</ID>
          <LABEL>PRJNA481154</LABEL>
        </XREF_LINK>
      </SAMPLE_LINK>
    </SAMPLE_LINKS>
    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
        <VALUE>2017-04</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>env_biome</TAG>
        <VALUE>Sandy desert</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>env_feature</TAG>
        <VALUE>Dune</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>env_material</TAG>
        <VALUE>Unvegetated bulk soil</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>Namibia</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>host</TAG>
        <VALUE>not applicable</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>lat_lon</TAG>
        <VALUE>23.73 S 15.77 E</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>replicate</TAG>
        <VALUE>biological replicate 2</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIMS.me</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIGS/MIMS/MIMARKS.plant-associated</VALUE>
      </SAMPLE_ATTRIBUTE>
    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
  <SAMPLE alias="Wf22" accession="SRS3550372">
    <IDENTIFIERS>
      <PRIMARY_ID>SRS3550372</PRIMARY_ID>
      <EXTERNAL_ID namespace="BioSample">SAMN09661646</EXTERNAL_ID>
    </IDENTIFIERS>
    <SAMPLE_NAME>
      <TAXON_ID>410658</TAXON_ID>
      <SCIENTIFIC_NAME>soil metagenome</SCIENTIFIC_NAME>
    </SAMPLE_NAME>
    <SAMPLE_LINKS>
      <SAMPLE_LINK>
        <XREF_LINK>
          <DB>bioproject</DB>
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          <LABEL>PRJNA481154</LABEL>
        </XREF_LINK>
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    </SAMPLE_LINKS>
    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
        <VALUE>2017-04</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>env_biome</TAG>
        <VALUE>Sandy desert</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>env_feature</TAG>
        <VALUE>Dune</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>env_material</TAG>
        <VALUE>Unvegetated bulk soil</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>Namibia</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>host</TAG>
        <VALUE>not applicable</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>lat_lon</TAG>
        <VALUE>23.73 S 15.77 E</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>replicate</TAG>
        <VALUE>biological replicate 1</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIMS.me</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIGS/MIMS/MIMARKS.plant-associated</VALUE>
      </SAMPLE_ATTRIBUTE>
    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
  <SAMPLE alias="Zf6" accession="SRS3550373">
    <IDENTIFIERS>
      <PRIMARY_ID>SRS3550373</PRIMARY_ID>
      <EXTERNAL_ID namespace="BioSample">SAMN09661644</EXTERNAL_ID>
    </IDENTIFIERS>
    <SAMPLE_NAME>
      <TAXON_ID>939928</TAXON_ID>
      <SCIENTIFIC_NAME>rhizosphere metagenome</SCIENTIFIC_NAME>
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      <SAMPLE_LINK>
        <XREF_LINK>
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    </SAMPLE_LINKS>
    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
        <VALUE>2017-04</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>env_biome</TAG>
        <VALUE>Sandy desert</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>env_feature</TAG>
        <VALUE>Dune</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>env_material</TAG>
        <VALUE>Root system</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>Namibia</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>host</TAG>
        <VALUE>Cladoraphia spinosa</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>lat_lon</TAG>
        <VALUE>23.73 S 15.77 E</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>replicate</TAG>
        <VALUE>biological replicate 6</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIMS.me</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIGS/MIMS/MIMARKS.plant-associated</VALUE>
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    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
  <SAMPLE alias="Zf7" accession="SRS3550374">
    <IDENTIFIERS>
      <PRIMARY_ID>SRS3550374</PRIMARY_ID>
      <EXTERNAL_ID namespace="BioSample">SAMN09661645</EXTERNAL_ID>
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    <SAMPLE_NAME>
      <TAXON_ID>939928</TAXON_ID>
      <SCIENTIFIC_NAME>rhizosphere metagenome</SCIENTIFIC_NAME>
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      <SAMPLE_LINK>
        <XREF_LINK>
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    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
        <VALUE>2017-04</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>env_biome</TAG>
        <VALUE>Sandy desert</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>env_feature</TAG>
        <VALUE>Dune</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>env_material</TAG>
        <VALUE>Root system</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>Namibia</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>host</TAG>
        <VALUE>Cladoraphia spinosa</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>lat_lon</TAG>
        <VALUE>23.73 S 15.77 E</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>replicate</TAG>
        <VALUE>biological replicate 7</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIMS.me</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIGS/MIMS/MIMARKS.plant-associated</VALUE>
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    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
  <SAMPLE alias="Yf2" accession="SRS3550375">
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      <PRIMARY_ID>SRS3550375</PRIMARY_ID>
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    <SAMPLE_NAME>
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      <SAMPLE_LINK>
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      <SAMPLE_ATTRIBUTE>
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        <TAG>env_biome</TAG>
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      <SAMPLE_ATTRIBUTE>
        <TAG>env_feature</TAG>
        <VALUE>Dune</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>env_material</TAG>
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      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>Namibia</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>host</TAG>
        <VALUE>Stipagrostis sp.</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>lat_lon</TAG>
        <VALUE>23.73 S 15.77 E</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>replicate</TAG>
        <VALUE>biological replicate 2</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
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      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIGS/MIMS/MIMARKS.plant-associated</VALUE>
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  <SAMPLE alias="Yf1" accession="SRS3550376">
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      <PRIMARY_ID>SRS3550376</PRIMARY_ID>
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      <SAMPLE_ATTRIBUTE>
        <TAG>env_feature</TAG>
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      <SAMPLE_ATTRIBUTE>
        <TAG>env_material</TAG>
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      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>Namibia</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>host</TAG>
        <VALUE>Stipagrostis sp.</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>lat_lon</TAG>
        <VALUE>23.73 S 15.77 E</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>replicate</TAG>
        <VALUE>biological replicate 1</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
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      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIGS/MIMS/MIMARKS.plant-associated</VALUE>
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  <SAMPLE alias="Wf5" accession="SRS3550377">
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      <PRIMARY_ID>SRS3550377</PRIMARY_ID>
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        <TAG>env_biome</TAG>
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        <TAG>env_feature</TAG>
        <VALUE>Dune</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>env_material</TAG>
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      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>Namibia</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>host</TAG>
        <VALUE>Stipagrostis sabulicola</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>lat_lon</TAG>
        <VALUE>23.73 S 15.77 E</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>replicate</TAG>
        <VALUE>biological replicate 5</VALUE>
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      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
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      <SAMPLE_ATTRIBUTE>
        <TAG>BioSampleModel</TAG>
        <VALUE>MIGS/MIMS/MIMARKS.plant-associated</VALUE>
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  <SAMPLE alias="Wf4" accession="SRS3550378">
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      <PRIMARY_ID>SRS3550378</PRIMARY_ID>
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    <SAMPLE_NAME>
      <TAXON_ID>939928</TAXON_ID>
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        <XREF_LINK>
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    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
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      <SAMPLE_ATTRIBUTE>
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      <SAMPLE_ATTRIBUTE>
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    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
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      <PRIMARY_ID>SRS3550379</PRIMARY_ID>
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      <TAXON_ID>939928</TAXON_ID>
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      <SAMPLE_LINK>
        <XREF_LINK>
          <DB>bioproject</DB>
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          <LABEL>PRJNA481154</LABEL>
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    </SAMPLE_LINKS>
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        <TAG>collection_date</TAG>
        <VALUE>2017-04</VALUE>
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      </SAMPLE_ATTRIBUTE>
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  </SAMPLE>
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      <PRIMARY_ID>SRS3550390</PRIMARY_ID>
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</SAMPLE_SET>
