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The investigation details page shows icons that represent the relationship of the investigation to its studies and assays. In the case of PSON Cell Line Genomic Characterization - mRNA, the investigation has one study and one assay.

You cannot filter data currently at the investigation level any further in the CSSI DCC Portal. You can only download the investigation's full data at this point, or start exploring its studies and assays.

Visualizing and Filtering Study Data

If you select only the study or assay icon, however, in the PSON Cell Line Genomic Characterization - mRNA investigation or arrive at any other Study Details page through a search, you can visualize much more of the investigation filestudy's structure, at a more granular level.file structure and filter on any field.

To visualize and select study data

1. Open a Study Details page.
   

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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.
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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, in this case, s_mrna.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 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 Count reduces from the 40 original values in s_mrna.txt to the 3 selected in this procedure.
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Visualizing and Filtering Assay Data

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