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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, in this case, 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. Continue exploring this data set or download the selected metadata or download the selected data.

Visualizing and Filtering Assay Data

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1. Filter the investigation data until you reach the entity you want to download.
   The entity's details page appears. It may involve a selected investigation, study, or assay:
   
   
   Or a process:
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2. Decide if you want to download the full archivedata, selected metadata, or selected data.
   
   
   

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