Skip to content

Releases: obi-ontology/obi

2026-05-08 Release

19 May 13:44
a7aeec4

Choose a tag to compare

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

01 Apr 17:39
c96b4a2

Choose a tag to compare

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

06 Jan 14:38
64ef2b1

Choose a tag to compare

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

24 Oct 16:55
0041022

Choose a tag to compare

New terms added:

ID Label
OBI:0003741 capillary electrophoresis mass spectrometry assay

2025-07-28 Release

31 Jul 16:05
e577517

Choose a tag to compare

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

09 May 14:45
1f79346

Choose a tag to compare

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

20 Mar 14:59
3fb3b19

Choose a tag to compare

New terms added:

ID Label

2025-01-09 Release

23 Jan 15:24
cd3a9f2

Choose a tag to compare

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

12 Dec 16:54
f2fc458

Choose a tag to compare

New terms added:

ID Label
OBI:0003686 chromatin accessibility assay
OBI:0003687 m6A-MTase sequencing assay

2024-10-25 Release

04 Nov 17:01
76ace83

Choose a tag to compare

New terms added:

ID Label
OBI:0003683 Illumina HiSeq Series Instrument
OBI:0003684 Illumina NextSeq Series Instrument
OBI:0003685 Illumina NovaSeq Series Instrument