# Importing CosMx data
### Obtain and add files to the project
There are 5 data files needed for CosMx data import: polygons.csv, exprMat\_file.csv, fov\_positions\_file.csv, metadata\_file.csv, tx\_file.csv. The last file (tx\_file.csv) contains the transcript information and is not required when importing protein data. Additionally the user will need an image folder, called either CellComposite or CellOverlay (**please ensure the images in this folder are not blank before uploading them to Flow**). This image folder contains one image per FOV and will be used for the visualisation of the spatial data.
Create a folder per sample, the folder will contain the 5 files and the image folder.
Transfer the data to your Flow server before moving onto the import step.
### Data import
* Create a new project and click the **'Add data'** button in the *Analyses* tab
* Select *Single cell > Spatial > NanoString CosMx* and click **Next**
* Click **Add sample**, name it and select the sample folder
* The importer will automatically select the image folder. If you have uploaded more than one image folder, select the one you want to use for the project.
* Select the appropriate annotation files (in this case we'll use hg38 - Ensembl Transcripts release 109)
* Leave the rest of the settings as default
* Click **Finish**
### Additional Assistance
If you need additional assistance, please visit [our support page](http://www.partek.com/support) to submit a help ticket or find phone numbers for regional support.
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