Table 1.

Online cell marker databases as of November 1, 2019.

Database	No. of markers	Cell type	Species	Characteristic	PMID	Address
Labome	226	7 major cell types and several others	Human	No distinction between diseased or healthy states. Few cell types are covered compared with other databases in this table. Source references are provided. No search engine. Only experimentally confirmed markers are included. This collection is most useful for searching verified markers.	N/A42	https://www.labome.com/method/Cell-Markers.html
CellFinder	553,905	3394 cell types and 50,951 cell lines	Human, mouse	Omics data are prioritized. In many cases, users must analyze raw data. No distinction between verified markers and ambiguous markers. This database is most useful for omics data exploration.	PMC3965082 43	http://www.cellfinder.org/
CellMarker	22,753	467 human cell types and 389 mouse cell types	Human, mouse	A major portion of markers are for cancer cells. No distinction between experimentally confirmed markers and ones gathered through omics. No distinction between verified markers and ambiguous markers. References are provided. This database is recommended for a first search of information.	PMC6323899 44	http://biocc.hrbmu.edu.cn/CellMarker/
PanglaoDB	8230	178 cell types	Human, mouse	Markers for healthy and diseased adult and embryonic cells. Source references are not provided for the markers. Contains single-cell sequencing data and automatically updates the list of papers on single-cell sequencing. Because of the relatively small number of cell types, this database is good for narrowing down the list of markers given by other databases.	PMC6450036 45	https://panglaodb.se/markers.html
SHOGoiN	2594	740 cell types	Human	Markers for healthy human cells including embryonic cells. Source references are provided. No distinction between verified markers and ambiguous markers. This database is most useful for a quick search by cell type.	PMC3204613 81	https://stemcellinformatics.org/cell_marker/literatures