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How to select nFeature parameter in Seurat

Hi everyone, I'm beginning in bioinformatics and I'm working on a seurat project now.

I noticed that in Seurat tutorial, they use subset = nFeature_RNA > 200 & nFeature_RNA < 2500 & percent.mt < 5 for filter.
The value of data in my project seems much larger than in the tutorial. The VlnPlot and FeatureScatter from my data showed below. How can I choose filter parameters for nFeature and percent.mt? Can I decide the parameter based on these two plots? Are there other ways to do the decision?

The cell is ec cell. VlnPlot  FeatureScatter

scrna-seq seurat

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