Experiment	GSM4809928	Study	GSE158761 
Organism	Arabidopsis thaliana (TAIR10)	Tissue	Whole root
Protocol	10X	Sample#	4
Sample Run	SRR12743467 SRR12743468 SRR12743469 SRR12743470
Reference	Gala, Hardik P., et al. A single cell view of the transcriptome during lateral root initiation in Arabidopsis thaliana. bioRxiv?(2020).

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Gene#	17421	Cell#	879
PolyA site#	scAPAtrap 8700Sierra 2326	Gene with polyA site#	scAPAtrap 8559Sierra 2271
APA event#	scAPAtrap 274Sierra 107	Gene with APA event#	scAPAtrap 133Sierra 52
Cell types 12	Ambiguous Stele Cells: 108Phloem Pole Pericycle: 138Endodermis: 24Epidermis: 112Columella/ Root Cap: 207Lateral Root Endodermis: 39Lateral Root Primordia: 35Xylem Pole Pericycle: 43Xylem: 26Phloem: 51Mature Pericycle: 91Cortex: 5

APA index

PolyA Site Expression APA Usage Weighted 3' UTR Length

Tools

scAPAtrap Sierra

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Box plot showing in different cell types

UMAP showing 2D embeddings of cell types based on the gene expression profile

UMAP showing distribution in single cells

Scatter plot showing correlation between gene expression and