GTEx samples in ARCHS4 #45
Description
I’m trying to extract GTEx samples from the ARCHS4 HDF5 file but haven’t found a metadata field that reliably flags GTEx origin, none of the /meta/samples/source_name_ch1, characteristics_ch1, or geo_accession entries seem to match “GTEx” consistently; could you please clarify which metadata attribute uniquely identifies GTEx samples and how best to filter for them?