Data composition and table-wise data download

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In total, we have four omics datasets with associated metadata. All the experimental data and metadata storage is managed using the RDBMS database. The Understand the data page explains the database schema. We recommend using CMI-PB API or the uniform resource identifier (URI) format i.e., https://www.cmi-pb.org/api/<table_name> to download data for each table. Alternatively, table-wise data can be downloaded directly using following URIs.

A.) Experimental data tables

Table Description	Subjects	Samples	API endpoint
Subject information	118		subject
Specimen information		939	specimen
Antibody titer data	112	829	plasma_ab_titer
Gene expression data	93	507	pbmc_gene_ expression
Plasma cytokine data	75	406	plasma cytokine concentration
Cell frequency data	74	414	pbmc_cell_frequency

B.) Supplementary data tables

Table Description	Features	API endpoint
cell type gating information	52	cell_type
gene	Ensembl gene id mapping		gene
transcript	Ensembl transcript id mapping		transcript
protein	Ensembl protein id mapping		protein
olink_prot_info	OLINK-UNIPROT id mapping		olink_prot_info

If you still find issues while accessing the data, write us at our solutions center to get them resolve.

Application programming interface

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CMI-PB API works with simple, human-readable URIs ('REST' = Representational State Transfer'). These can be used to resolve and to map identifiers in CMI-PB, and to directly fetch networks and other data items in a number of formats. For more details, please refer to the API documentation which you can find in the developer section of help pages.

Database API Version History

Version	Date	URI	Content
4.1	Feb 2024	https://www.cmi-pb.org/docs/api/v4_1/	The current version of database
4.0	Sept 2023	https://www.cmi-pb.org/docs/api/v4/	Forth version of database
3.0	Oct 2022	https://www.cmi-pb.org/docs/api/v3/	Third version of database
2.0	Oct 2021	https://www.cmi-pb.org/docs/api/v2/	Second version of database
1.0	Aug 2020	https://www.cmi-pb.org/docs/api/v1/	First version of database