Macro-subject areas into which outputs are assigned. Research articles are assigned to subjects based on the the scientific discipline of the journal in which they are published, with the exception of multidisciplinary journals – Nature, Nature Communications, PNAS and Science. For these journals, subjects are assigned at the article level. Research articles can be assigned to more than one subject.
You can view the journals included in a subject by hovering over the ( ℹ︎ ) icon next to the subject on the article results page. View the complete list of journals in each subject.