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[bioontology-support] OBO upload, class browser issue

Benjamin Gyori benjamin_gyori at
Mon Nov 20 07:32:18 PST 2017

Dear BioPortal developers,

I am trying to upload an ontology called Bioentities in OBO format. The
ontology contains around ~450 terms, with each term having a (1) name (2)
list of synonym strings (3) list of mappings to external ontologies (4)
list of isa / partof / inverse_isa / has_part relationships to other terms
in the same ontology and also external ontologies.

I have uploaded the OBO file, but found that even after it was parsed and
indexed, the "Classes" page returned "Problem retrieving classes". Could
you help determine how I need to modify the OBO file to work with the class
browser? I am attaching a small sample of the overall ontology for
reference. The ontology is uploaded at, but is currently set to
private - I can share it if it helps find the issue.

Thank you for your help!

Best regards,

Benjamin M. Gyori, PhD
Research Associate in Therapeutic Science
Laboratory of Systems Pharmacology
Harvard Medical School
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