Experiment	GSM3687214	Study	GSE128854 
Organism	Mus musculus (mm10)	Tissue	choroid plexus
Protocol	10X	Sample#	8
Sample Run	SRR8795621 SRR8795622 SRR8795623 SRR8795624 SRR8795625 SRR8795626 SRR8795627 SRR8795628
Reference	Van Hove, H., et al. (2019). A single-cell atlas of mouse brain macrophages reveals unique transcriptional identities shaped by ontogeny and tissue environment. Nature Neuroscience 22(6): 1021-1035.

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Gene#	16000	Cell#	4326
PolyA site#	scAPAtrap 17185Sierra 13270	Gene with polyA site#	scAPAtrap 13197Sierra 10236
APA event#	scAPAtrap 6925Sierra 5284	Gene with APA event#	scAPAtrap 2937Sierra 2259
Cell types 3	Transit amplifying (TA) cell: 1682Extraembryonic ectoderm cell: 726Hematopoetic cell: 1918

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