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    <TITLE>K562 cells, DualCRISPR screen of ultraconserved elements, 15 day, replicate 1</TITLE>
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    <TITLE>HEK293T cells, DualCRISPR screen of ultraconserved elements, 15 days, replicate 1</TITLE>
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    <SAMPLE_LINKS>
      <SAMPLE_LINK>
        <XREF_LINK>
          <DB>bioproject</DB>
          <ID>1069067</ID>
          <LABEL>PRJNA1069067</LABEL>
        </XREF_LINK>
      </SAMPLE_LINK>
    </SAMPLE_LINKS>
    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>source_name</TAG>
        <VALUE>HEK293T</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell line</TAG>
        <VALUE>HEK293T</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell type</TAG>
        <VALUE>embryonic kidney cell</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>genotype</TAG>
        <VALUE>Cas9-expressing, DualCRISPR library targeting ultraconserved elements transfected</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>treatment</TAG>
        <VALUE>n.a.</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
  <SAMPLE alias="GSM8036422" accession="SRS20257466">
    <IDENTIFIERS>
      <PRIMARY_ID>SRS20257466</PRIMARY_ID>
      <EXTERNAL_ID namespace="BioSample">SAMN39613909</EXTERNAL_ID>
      <EXTERNAL_ID namespace="GEO">GSM8036422</EXTERNAL_ID>
    </IDENTIFIERS>
    <TITLE>HEK293T cells, DualCRISPR screen of ultraconserved elements, 15 days, replicate 3</TITLE>
    <SAMPLE_NAME>
      <TAXON_ID>9606</TAXON_ID>
      <SCIENTIFIC_NAME>Homo sapiens</SCIENTIFIC_NAME>
    </SAMPLE_NAME>
    <SAMPLE_LINKS>
      <SAMPLE_LINK>
        <XREF_LINK>
          <DB>bioproject</DB>
          <ID>1069067</ID>
          <LABEL>PRJNA1069067</LABEL>
        </XREF_LINK>
      </SAMPLE_LINK>
    </SAMPLE_LINKS>
    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>source_name</TAG>
        <VALUE>HEK293T</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell line</TAG>
        <VALUE>HEK293T</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell type</TAG>
        <VALUE>embryonic kidney cell</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>genotype</TAG>
        <VALUE>Cas9-expressing, DualCRISPR library targeting ultraconserved elements transfected</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>treatment</TAG>
        <VALUE>n.a.</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
  <SAMPLE alias="GSM8036423" accession="SRS20257467">
    <IDENTIFIERS>
      <PRIMARY_ID>SRS20257467</PRIMARY_ID>
      <EXTERNAL_ID namespace="BioSample">SAMN39613908</EXTERNAL_ID>
      <EXTERNAL_ID namespace="GEO">GSM8036423</EXTERNAL_ID>
    </IDENTIFIERS>
    <TITLE>K562 cells, DualCRISPR pilot screen of putative K562 enhancers, 0 day, replicate 1</TITLE>
    <SAMPLE_NAME>
      <TAXON_ID>9606</TAXON_ID>
      <SCIENTIFIC_NAME>Homo sapiens</SCIENTIFIC_NAME>
    </SAMPLE_NAME>
    <SAMPLE_LINKS>
      <SAMPLE_LINK>
        <XREF_LINK>
          <DB>bioproject</DB>
          <ID>1069067</ID>
          <LABEL>PRJNA1069067</LABEL>
        </XREF_LINK>
      </SAMPLE_LINK>
    </SAMPLE_LINKS>
    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>source_name</TAG>
        <VALUE>K562</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell line</TAG>
        <VALUE>K562</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell type</TAG>
        <VALUE>erythroleukemia</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>genotype</TAG>
        <VALUE>Cas9-expressing, DualCRISPR library targeting putative k562 enhancers transfected</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>treatment</TAG>
        <VALUE>n.a.</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
  <SAMPLE alias="GSM8036424" accession="SRS20257468">
    <IDENTIFIERS>
      <PRIMARY_ID>SRS20257468</PRIMARY_ID>
      <EXTERNAL_ID namespace="BioSample">SAMN39613907</EXTERNAL_ID>
      <EXTERNAL_ID namespace="GEO">GSM8036424</EXTERNAL_ID>
    </IDENTIFIERS>
    <TITLE>K562 cells, DualCRISPR pilot screen of putative K562 enhancers, 0 day, replicate 2</TITLE>
    <SAMPLE_NAME>
      <TAXON_ID>9606</TAXON_ID>
      <SCIENTIFIC_NAME>Homo sapiens</SCIENTIFIC_NAME>
    </SAMPLE_NAME>
    <SAMPLE_LINKS>
      <SAMPLE_LINK>
        <XREF_LINK>
          <DB>bioproject</DB>
          <ID>1069067</ID>
          <LABEL>PRJNA1069067</LABEL>
        </XREF_LINK>
      </SAMPLE_LINK>
    </SAMPLE_LINKS>
    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>source_name</TAG>
        <VALUE>K562</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell line</TAG>
        <VALUE>K562</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell type</TAG>
        <VALUE>erythroleukemia</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>genotype</TAG>
        <VALUE>Cas9-expressing, DualCRISPR library targeting putative k562 enhancers transfected</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>treatment</TAG>
        <VALUE>n.a.</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
  <SAMPLE alias="GSM8036425" accession="SRS20257469">
    <IDENTIFIERS>
      <PRIMARY_ID>SRS20257469</PRIMARY_ID>
      <EXTERNAL_ID namespace="BioSample">SAMN39613906</EXTERNAL_ID>
      <EXTERNAL_ID namespace="GEO">GSM8036425</EXTERNAL_ID>
    </IDENTIFIERS>
    <TITLE>K562 cells, DualCRISPR pilot screen of putative K562 enhancers, 15 days, replicate 1</TITLE>
    <SAMPLE_NAME>
      <TAXON_ID>9606</TAXON_ID>
      <SCIENTIFIC_NAME>Homo sapiens</SCIENTIFIC_NAME>
    </SAMPLE_NAME>
    <SAMPLE_LINKS>
      <SAMPLE_LINK>
        <XREF_LINK>
          <DB>bioproject</DB>
          <ID>1069067</ID>
          <LABEL>PRJNA1069067</LABEL>
        </XREF_LINK>
      </SAMPLE_LINK>
    </SAMPLE_LINKS>
    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>source_name</TAG>
        <VALUE>K562</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell line</TAG>
        <VALUE>K562</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell type</TAG>
        <VALUE>erythroleukemia</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>genotype</TAG>
        <VALUE>Cas9-expressing, DualCRISPR library targeting putative k562 enhancers transfected</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>treatment</TAG>
        <VALUE>n.a.</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
  <SAMPLE alias="GSM8036426" accession="SRS20257470">
    <IDENTIFIERS>
      <PRIMARY_ID>SRS20257470</PRIMARY_ID>
      <EXTERNAL_ID namespace="BioSample">SAMN39613905</EXTERNAL_ID>
      <EXTERNAL_ID namespace="GEO">GSM8036426</EXTERNAL_ID>
    </IDENTIFIERS>
    <TITLE>K562 cells, DualCRISPR pilot screen of putative K562 enhancers, 15 days, replicate 2</TITLE>
    <SAMPLE_NAME>
      <TAXON_ID>9606</TAXON_ID>
      <SCIENTIFIC_NAME>Homo sapiens</SCIENTIFIC_NAME>
    </SAMPLE_NAME>
    <SAMPLE_LINKS>
      <SAMPLE_LINK>
        <XREF_LINK>
          <DB>bioproject</DB>
          <ID>1069067</ID>
          <LABEL>PRJNA1069067</LABEL>
        </XREF_LINK>
      </SAMPLE_LINK>
    </SAMPLE_LINKS>
    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>source_name</TAG>
        <VALUE>K562</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell line</TAG>
        <VALUE>K562</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell type</TAG>
        <VALUE>erythroleukemia</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>genotype</TAG>
        <VALUE>Cas9-expressing, DualCRISPR library targeting putative k562 enhancers transfected</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>treatment</TAG>
        <VALUE>n.a.</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
  <SAMPLE alias="GSM8036427" accession="SRS20257471">
    <IDENTIFIERS>
      <PRIMARY_ID>SRS20257471</PRIMARY_ID>
      <EXTERNAL_ID namespace="BioSample">SAMN39613904</EXTERNAL_ID>
      <EXTERNAL_ID namespace="GEO">GSM8036427</EXTERNAL_ID>
    </IDENTIFIERS>
    <TITLE>K562 cells, DualCRISPR at scale screen of putative K562 enhancers, 0 day, replicate 1</TITLE>
    <SAMPLE_NAME>
      <TAXON_ID>9606</TAXON_ID>
      <SCIENTIFIC_NAME>Homo sapiens</SCIENTIFIC_NAME>
    </SAMPLE_NAME>
    <SAMPLE_LINKS>
      <SAMPLE_LINK>
        <XREF_LINK>
          <DB>bioproject</DB>
          <ID>1069067</ID>
          <LABEL>PRJNA1069067</LABEL>
        </XREF_LINK>
      </SAMPLE_LINK>
    </SAMPLE_LINKS>
    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>source_name</TAG>
        <VALUE>K562</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell line</TAG>
        <VALUE>K562</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell type</TAG>
        <VALUE>erythroleukemia</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>genotype</TAG>
        <VALUE>Cas9-expressing, DualCRISPR library targeting putative k562 enhancers transfected</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>treatment</TAG>
        <VALUE>n.a.</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
  <SAMPLE alias="GSM8036428" accession="SRS20257472">
    <IDENTIFIERS>
      <PRIMARY_ID>SRS20257472</PRIMARY_ID>
      <EXTERNAL_ID namespace="BioSample">SAMN39613903</EXTERNAL_ID>
      <EXTERNAL_ID namespace="GEO">GSM8036428</EXTERNAL_ID>
    </IDENTIFIERS>
    <TITLE>K562 cells, DualCRISPR at scale screen of putative K562 enhancers, 0 day, replicate 2</TITLE>
    <SAMPLE_NAME>
      <TAXON_ID>9606</TAXON_ID>
      <SCIENTIFIC_NAME>Homo sapiens</SCIENTIFIC_NAME>
    </SAMPLE_NAME>
    <SAMPLE_LINKS>
      <SAMPLE_LINK>
        <XREF_LINK>
          <DB>bioproject</DB>
          <ID>1069067</ID>
          <LABEL>PRJNA1069067</LABEL>
        </XREF_LINK>
      </SAMPLE_LINK>
    </SAMPLE_LINKS>
    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>source_name</TAG>
        <VALUE>K562</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell line</TAG>
        <VALUE>K562</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell type</TAG>
        <VALUE>erythroleukemia</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>genotype</TAG>
        <VALUE>Cas9-expressing, DualCRISPR library targeting putative k562 enhancers transfected</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>treatment</TAG>
        <VALUE>n.a.</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
  <SAMPLE alias="GSM8036429" accession="SRS20257473">
    <IDENTIFIERS>
      <PRIMARY_ID>SRS20257473</PRIMARY_ID>
      <EXTERNAL_ID namespace="BioSample">SAMN39613902</EXTERNAL_ID>
      <EXTERNAL_ID namespace="GEO">GSM8036429</EXTERNAL_ID>
    </IDENTIFIERS>
    <TITLE>K562 cells, DualCRISPR at scale screen of putative K562 enhancers, 15 days, replicate 1</TITLE>
    <SAMPLE_NAME>
      <TAXON_ID>9606</TAXON_ID>
      <SCIENTIFIC_NAME>Homo sapiens</SCIENTIFIC_NAME>
    </SAMPLE_NAME>
    <SAMPLE_LINKS>
      <SAMPLE_LINK>
        <XREF_LINK>
          <DB>bioproject</DB>
          <ID>1069067</ID>
          <LABEL>PRJNA1069067</LABEL>
        </XREF_LINK>
      </SAMPLE_LINK>
    </SAMPLE_LINKS>
    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>source_name</TAG>
        <VALUE>K562</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell line</TAG>
        <VALUE>K562</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell type</TAG>
        <VALUE>erythroleukemia</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>genotype</TAG>
        <VALUE>Cas9-expressing, DualCRISPR library targeting putative k562 enhancers transfected</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>treatment</TAG>
        <VALUE>n.a.</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
  <SAMPLE alias="GSM8036430" accession="SRS20257474">
    <IDENTIFIERS>
      <PRIMARY_ID>SRS20257474</PRIMARY_ID>
      <EXTERNAL_ID namespace="BioSample">SAMN39613901</EXTERNAL_ID>
      <EXTERNAL_ID namespace="GEO">GSM8036430</EXTERNAL_ID>
    </IDENTIFIERS>
    <TITLE>K562 cells, DualCRISPR at scale screen of putative K562 enhancers, 15 days, replicate 2</TITLE>
    <SAMPLE_NAME>
      <TAXON_ID>9606</TAXON_ID>
      <SCIENTIFIC_NAME>Homo sapiens</SCIENTIFIC_NAME>
    </SAMPLE_NAME>
    <SAMPLE_LINKS>
      <SAMPLE_LINK>
        <XREF_LINK>
          <DB>bioproject</DB>
          <ID>1069067</ID>
          <LABEL>PRJNA1069067</LABEL>
        </XREF_LINK>
      </SAMPLE_LINK>
    </SAMPLE_LINKS>
    <SAMPLE_ATTRIBUTES>
      <SAMPLE_ATTRIBUTE>
        <TAG>source_name</TAG>
        <VALUE>K562</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell line</TAG>
        <VALUE>K562</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>cell type</TAG>
        <VALUE>erythroleukemia</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>genotype</TAG>
        <VALUE>Cas9-expressing, DualCRISPR library targeting putative k562 enhancers transfected</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>treatment</TAG>
        <VALUE>n.a.</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>geo_loc_name</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
      <SAMPLE_ATTRIBUTE>
        <TAG>collection_date</TAG>
        <VALUE>missing</VALUE>
      </SAMPLE_ATTRIBUTE>
    </SAMPLE_ATTRIBUTES>
  </SAMPLE>
</SAMPLE_SET>
