Before revision: Categories of Databases within BioCyc: Based on the manual curation done, BioCyc database family is divided into 3 tiers: Tier 1: Databases which have received at least one year of literature based manual curation.
After revision: Categories of Databases Based on the manual curation done, BioCyc database family is divided into 3 tiers: Tier 1: Databases which have received at least one year of literature based manual curation.