Releases: obi-ontology/obi
2026-05-08 Release
New terms added:
| ID | Label |
|---|---|
| OBI:0003882 | super-resolution microscopy assay |
| OBI:0003883 | multiphoton microscope |
| OBI:0003884 | light sheet microscope |
| OBI:0003885 | 1M7 RNA structure mapping assay |
| OBI:0003886 | NAI RNA structure mapping assay |
| OBI:0003887 | NAI-N3 RNA structure mapping assay |
| OBI:0003888 | 2A3 RNA structure mapping assay |
| OBI:0003889 | I5 RNA structure mapping assay |
| OBI:0003890 | 1M4 RNA structure mapping assay |
| OBI:0003891 | 6A3 RNA structure mapping assay |
| OBI:0003892 | B5 RNA structure mapping assay |
| OBI:0003893 | NIC RNA structure mapping assay |
| OBI:0003894 | BzCN RNA structure mapping assay |
| OBI:0003895 | 1M6 RNA structure mapping assay |
| OBI:0003896 | 5NIA RNA structure mapping assay |
| OBI:0003897 | cell count assay |
| OBI:0003898 | differential leukocyte count assay |
| OBI:0003899 | electrocardiogram assay |
| OBI:0003900 | telemeter sensor detection assay |
| OBI:0003901 | multi-electrode array assay |
| OBI:0003902 | transepithelial / transendothelial electrical resistance (TEER) assay |
| OBI:0003903 | count of multi-electrode plate electrodes detecting action potential assay |
| OBI:0003904 | count of multi-electrode plate electrodes detecting neuron burst assay |
| OBI:0003905 | neural network spike rate assay |
| OBI:0003906 | neural network spike duration assay |
| OBI:0003907 | count of multi-electrode plate electrodes detecting spike peak assay |
| OBI:0003908 | mean interspike interval in network spike |
| OBI:0003909 | bile acid concentration assay |
| OBI:0003910 | urea nitrogen assay |
| OBI:0003911 | urea nitrogen concentration assay |
2026-03-19 Release
New terms added:
| ID | Label |
|---|---|
| OBI:0003779 | chemiluminescent assay |
| OBI:0003780 | electrochemiluminescence assay |
| OBI:0003781 | proteomics by mass spectrometry assay |
| OBI:0003782 | metabolomics by mass spectrometry assay |
| OBI:0003788 | cellular indexing of transcriptomes and epitopes by sequencing |
| OBI:0003789 | immune receptor repertoire profiling assay |
| OBI:0003790 | antibody-dependent complement deposition assay |
| OBI:0003791 | bacterial flagellin detection in plasma assay |
| OBI:0003792 | bacterial flagellin detection in feces assay |
| OBI:0003793 | bacterial lipopolysaccharide detection in plasma assay |
| OBI:0003794 | bacterial lipopolysaccharide detection in feces assay |
| OBI:0003795 | adenosine deaminase activity assay |
| OBI:0003796 | pathogen neutralization assay |
| OBI:0003797 | bacterial neutralization assay |
| OBI:0003798 | viral plaque assay |
| OBI:0003799 | analyte detection by flow based bead assay |
| OBI:0003800 | bacterial lipopolysaccharide |
| OBI:0003801 | urine opacity assay |
| OBI:0003802 | urine color assay |
| OBI:0003803 | urine histological assay |
| OBI:0003804 | color detection assay |
| OBI:0003805 | opacity determination assay |
| OBI:0003811 | estrous cycle count assay |
| OBI:0003812 | estrous cycle duration assay |
| OBI:0003813 | organism development assay in late embryo based on examination of surface structure |
| OBI:0003814 | organism development assay in late embryo based on examination of skeletal system |
| OBI:0003815 | organism development assay in late embryo based on examination of anatomical system |
| OBI:0003816 | distance measurement assay |
| OBI:0003817 | length measurement assay |
| OBI:0003818 | crown rump length |
| OBI:0003819 | path length assay |
| OBI:0003820 | cell migration assay |
| OBI:0003821 | oligodendrocyte migration assay |
| OBI:0003822 | radial glial migration assay |
| OBI:0003823 | neuron migration assay |
| OBI:0003824 | neural crest cell migration assay |
| OBI:0003825 | acidity quality assay |
| OBI:0003826 | specific gravity assay |
| OBI:0003827 | speed measurement assay |
| OBI:0003828 | velocity measurement assay |
| OBI:0003829 | luminescence detection assay |
| OBI:0003830 | cell viability assay using luciferase to detect ATP in the cell |
| OBI:0003831 | population count assay |
| OBI:0003832 | hemolysis assay |
| OBI:0003833 | neuron action potential rate assay |
| OBI:0003834 | neuron burst rate assay |
| OBI:0003835 | neuron interburst interval assay |
| OBI:0003836 | neuron burst duration assay |
| OBI:0003837 | action potential interval assay |
| OBI:0003838 | rate of action potentials in neuron burst assay |
| OBI:0003839 | body mass assay |
| OBI:0003840 | body mass change assay |
| OBI:0003841 | body weight assay at death |
| OBI:0003842 | tissue mass assay |
| OBI:0003843 | tissue mass percent of body mass assay |
| OBI:0003844 | developmental marker age of attainment assessment |
| OBI:0003850 | cytochrome P450 assay |
| OBI:0003851 | growth factor assay |
| OBI:0003852 | Hoechst dye assay |
| OBI:0003853 | hypersensitivity assay |
2025-12-18 Release
This is the first version of OBI to use COB as the upper-level, see #1921. There is a views/bfo.owl file that continues to use BFO as the upper-level, if you need that.
New terms added:
| ID | Label |
|---|---|
| OBI:0003750 | neurite outgrowth assay |
| OBI:0003751 | neuronal differentiation assay |
| OBI:0003752 | oligodendrocyte differentiation assay |
| OBI:0003753 | regulation of synapse maturation assay |
| OBI:0003754 | Ames assay |
| OBI:0003755 | micronucleus assay |
| OBI:0003756 | PIG-a assay |
| OBI:0003757 | cell viability assay based on detection of resorufin |
| OBI:0003758 | cell death assay using caspase abundance to detect apoptosis |
| OBI:0003759 | cell death assay |
| OBI:0003760 | cell viability assay based on detection of resorufin using fluorescence to qualtify the presence of resorufin. |
| OBI:0003761 | cell death assay detecting lactate dehydrogenase (LDH) release |
| OBI:0003762 | cell death assay detecting lactate dehydrogenase (LDH) release using absorbance detection. |
| OBI:0003763 | ovulation assessment in rodent assay |
| OBI:0003764 | macroscopic examination of material anatomical entity assay |
| OBI:0003765 | pathological macroscopic examination of specimen assay |
| OBI:0003766 | estrous cycle assay based on tissue morphology |
| OBI:0003767 | organism development assay in late embryo |
| OBI:0003768 | pregnancy assessment based on tissue morphology assay |
| OBI:0003769 | cell death assay using vital dye |
| OBI:0003770 | neurite length assay |
| OBI:0003771 | neurite degree of arborization assay |
| OBI:0003772 | neurite count assay |
| OBI:0003773 | neuron count assay |
| OBI:0003774 | cell-body-associated presynaptic puncta count assay |
| OBI:0003775 | dendrite-associated presynaptic puncta count assay |
| OBI:0003776 | synapse per neuron assay |
| OBI:0003777 | absorbance quality detection assay |
| OBI:0003778 | hormone assay |
| OBI:0003806 | electrocardiograph |
| OBI:0003807 | biotelemeter |
| OBI:0003808 | multi-electrode array plate |
| OBI:0003809 | Transepithelial Electrical Resistance (TEER) device |
2025-10-14 Release
New terms added:
| ID | Label |
|---|---|
| OBI:0003741 | capillary electrophoresis mass spectrometry assay |
2025-07-28 Release
New terms added:
| ID | Label |
|---|---|
| OBI:0003726 | maximum data transformation |
| OBI:0003727 | minimum data transformation |
| OBI:0003734 | clinical history collection assay |
| OBI:0003735 | disease severity assay |
| OBI:0003736 | genetic characteristic assay |
| OBI:0003738 | blood type assay |
| OBI:0003739 | manual muscle testing 8 score |
| OBI:0003740 | childhood myositis assessment scale score |
| OBI:0004001 | randomized clinical trial |
| OBI:0004002 | non-randomized clinical trial |
This release includes a new obi-cob.owl file that uses COB as the top-level ontology for OBI:
http://purl.obolibrary.org/obo/obi/2025-07-28/obi-cob.owl
We are planning to use COB as the top-level of OBI in the primary obi.owl file starting at the end of October. Ontologies that import from OBI are strongly encouraged to test obi-cob.owl in their workflows as soon as possible.
See #1857 for details on OBI's transition to COB, and leave a comment about your testing: whether it worked or what problems you ran into.
2025-05-01 Release
New terms added:
| ID | Label |
|---|---|
| OBI:0003692 | case-control investigation |
| OBI:0003693 | observational investigation |
| OBI:0003694 | longitudinal investigation |
| OBI:0003695 | nested case-control investigation |
| OBI:0003696 | animal investigation |
| OBI:0003697 | clinical investigation |
| OBI:0003698 | observational clinical investigation |
| OBI:0003699 | clinical trial |
| OBI:0003700 | phase I clinical trial |
| OBI:0003701 | phase II clinical trial |
| OBI:0003702 | phase III clinical trial |
| OBI:0003703 | has study design |
| OBI:0003704 | is study design of |
| OBI:0003705 | study arm design |
| OBI:0003706 | study arm population |
| OBI:0003707 | mortar and pestle device |
| OBI:0003708 | infrared gas analyzer |
| OBI:0003709 | assessment of learning and/or memory response in an organism |
| OBI:0003710 | assessment of startle response in an organism |
| OBI:0003711 | grip strength assay |
| OBI:0003712 | assay of organismal behavior |
| OBI:0003713 | organism development assay |
| OBI:0003714 | reproductive assay |
| OBI:0003715 | vital sign assay |
| OBI:0003716 | blood pressure assay |
| OBI:0003717 | heart rate variability assay |
| OBI:0003718 | pulse rate assay |
| OBI:0003719 | respiratory assay |
| OBI:0003720 | cell differentiation assay |
| OBI:0003721 | cell based DNA damage assay |
| OBI:0003722 | natural killer cell count assay |
| OBI:0003723 | natural killer cell percentage assay |
| OBI:0003724 | sperm count assay |
| OBI:0003725 | survey administration assay |
2025-03-06 Release
New terms added:
| ID | Label |
|---|
2025-01-09 Release
Significant changes:
- The object properties "has_specified_input", "has_specified_output", "is_specified_input_of", and "is_specified_output_of" have been relabelled to remove the underscores.
- We updated our RO Core import, which was very old. There have been two significant label changes in RO: 'inheres in' is now 'characteristic of', and 'bearer of' is now 'has characteristic'.
- We made improvements to the 'specimen' branch in #1839.
New terms added:
| ID | Label |
|---|---|
| OBI:0003412 | linked-read sequencing assay |
| OBI:0003688 | sand bath |
| OBI:0003689 | ice bath |
| OBI:0003690 | dry ice bath |
| OBI:0003691 | liquid nitrogen bath |
2024-12-05 Release
New terms added:
| ID | Label |
|---|---|
| OBI:0003686 | chromatin accessibility assay |
| OBI:0003687 | m6A-MTase sequencing assay |
2024-10-25 Release
New terms added:
| ID | Label |
|---|---|
| OBI:0003683 | Illumina HiSeq Series Instrument |
| OBI:0003684 | Illumina NextSeq Series Instrument |
| OBI:0003685 | Illumina NovaSeq Series Instrument |