Experiment	GSM4809923	Study	GSE158761 
Organism	Arabidopsis thaliana (TAIR10)	Tissue	Whole root
Protocol	10X	Sample#	4
Sample Run	SRR12743447 SRR12743448 SRR12743449 SRR12743450
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#	17834	Cell#	1412
PolyA site#	scAPAtrap 11567Sierra 2870	Gene with polyA site#	scAPAtrap 11324Sierra 2799
APA event#	scAPAtrap 470Sierra 140	Gene with APA event#	scAPAtrap 227Sierra 69
Cell types 12	Epidermis: 430Mature Pericycle: 48Ambiguous Stele Cells: 136Columella/ Root Cap: 189Xylem Pole Pericycle: 114Xylem: 50Phloem Pole Pericycle: 234Lateral Root Endodermis: 42Endodermis: 87Phloem: 32Lateral Root Primordia: 17Cortex: 33

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