This version of OLS (OLS3) is no longer updated and will be replaced by OLS4 on 30th October 2023.

Help us test the new version of OLS, with updated versions of ontologies and lots of new features!

The gene has been completely removed e.g. by genetic engineering [ ]

This is just here as a test because I lose it

Term information



has exact synonym
  • knock-out
  • MI:0788

Term relations

Subclass of: