Given that compounds are the unique chemical structures extracted from the Substance database (and there can be many substance records for the same chemical), one cross-reference from a compound to a PubMed article is counted if one (or more) of the compound's corresponding substances contains a cross-reference to that given PubMed article.
It corresponds to the percentage of papers in the given profile (that we managed to cross-reference to WoS) that are also in the algorithm-generated cluster which contains most papers of that profile.
For example, the "pcsubstance_pubmed" and "pcsubstance_pubmed_publisher" filters can be used to find substance records with cross-references to PubMed that are provided by PubChem depositors to PubChem and by publishers to PubMed, respectively.
Instead, we should regard all possible worlds as representations which are given all at once in concert with one another so that cross references to non-actual possible objects by different possible worlds are guaranteed from the outset.
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Microarrays utilized µParaflo™ microfluidic chip technology and optimized RNA hybridization probes with a detection limit of <100 attomole that was cross referenced to the Sanger miRNA database (Release 9.0, microrna.sanger.ac.uk/) after normalization.
EPICDB contains high throughput mass spectrometry data that is cross referenced to all available computationally and experimentally derived protein sequences for T. gondii and C. parvum.
The "pccompound_pubmed_publisher" filter retrieves those with cross-references to PubMed articles that are provided to PubMed by publishers.
The first option "PubMed Citations" is for Entrez links derived from cross-references to PubMed articles that data contributors provided to PubChem.
26 The UniProt entries have valued-added cross-references to external databases that provide diverse annotation including structural, gene expression, literature and sequence diversity.
In addition, cross-referencing to BAC clones that contain particular genes identified by DNA hybridisation helps in ordering BAC and FPC contigs.
