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1. Open a Study Details page.
   

   

2. In the Visualize and Select area, click one of the entities.

   Info
   title Study Hierarchy
   The hierarchy of entities for studies according to the ISA-TAB standard is as follows, from less granular to more granular: Source > Protocol > Sample

   For example, click the source. Metadata for that source appears.
   

3. From the Source Name list, click the arrow to open the list of values. Each value is a Source Name from the study file, which in this case , is s_mrna.txt.
   
4. Click one or more values in the list to select them. To select multiple values, click one, wait for it to appear on the Metadata for Source page, and then click the arrow again to select another value. To clear a selection, click that value again.
   
5. Click Filter Results.
   The Source Count reduces from the 40 original values in the unfiltered study file, s_mrna.txt, to the 3 selected in this procedure.
   
6. Options you have at this point include continuing to explore this data set, downloading the metadata of the 3 values you selected, downloading the selected data of the 3 values you selected (which includes the metadata), or clicking Clear Filters to filter a different entity.

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1. Open an Assay Details page.
   

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2. In the Visualize and Select area, click one of the entities. Note that the width of some visualizations require you to scroll by clicking the arrows at the bottom of the page.

   Info
   title Study Assay Hierarchy
   The hierarchy of entities for studies assays according to the ISA-TAB standard is as follows, from less granular to more granular: Assay Sample > Protocol > Sample Data File

   For example, click the sourcesample. Metadata for that source the sample appears.
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3. From the Source Sample Name list, click the arrow to open the list of values. Each value is a Source Sample Name from the study assay file, which in this case , s_mrna.txt.
   is a_mrna_transcription_profiling_nucleotide_sequencing.txt.
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4. Click one or more values in the list to select them. To select multiple values, click one, wait for it to appear on the Metadata for Source Sample page, and then click the arrow again to select another value. To clear a selection, click that value again.
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5. Click Filter Results.
   The Source Sample Count reduces from the 40 39 original values in the unfiltered study assay file, sa_mrna_transcription_profiling_nucleotide_sequencing.txt, to the 3 5 selected in this procedure.
   
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6. Options you have at this point include continuing to explore Continue exploring this data set or download the selected metadata or download the selected data, downloading the metadata of the 3 values you selected, downloading the selected data of the 3 values you selected (which includes the metadata), or clicking Clear Filters to filter a different entity.

Searching Investigation Data

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