When you add a constraint having as type a Boolean object you can set TRUE/FALSE (not 'has no value' anymore) or add a null constraint ('Has no value'/'Has a value')
When you add a constraint having as type a Boolean object you can set TRUE/FALSE (not 'has no value' anymore) or add a null constraint ('Has no value'/'Has a value')

tomck/intermine,tomck/intermine,zebrafishmine/intermine,drhee/toxoMine,zebrafishmine/intermine,joshkh/intermine,Arabidopsis-Information-Portal/intermine,drhee/toxoMine,kimrutherford/intermine,joshkh/intermine,JoeCarlson/intermine,elsiklab/intermine,drhee/toxoMine,elsiklab/intermine,drhee/toxoMine,Arabidopsis-Information-Portal/intermine,kimrutherford/intermine,justincc/intermine,drhee/toxoMine,joshkh/intermine,drhee/toxoMine,Arabidopsis-Information-Portal/intermine,JoeCarlson/intermine,zebrafishmine/intermine,joshkh/intermine,zebrafishmine/intermine,Arabidopsis-Information-Portal/intermine,tomck/intermine,tomck/intermine,elsiklab/intermine,elsiklab/intermine,kimrutherford/intermine,justincc/intermine,JoeCarlson/intermine,elsiklab/intermine,joshkh/intermine,Arabidopsis-Information-Portal/intermine,zebrafishmine/intermine,Arabidopsis-Information-Portal/intermine,tomck/intermine,zebrafishmine/intermine,kimrutherford/intermine,JoeCarlson/intermine,kimrutherford/intermine,joshkh/intermine,elsiklab/intermine,drhee/toxoMine,tomck/intermine,kimrutherford/intermine,elsiklab/intermine,zebrafishmine/intermine,justincc/intermine,zebrafishmine/intermine,kimrutherford/intermine,kimrutherford/intermine,elsiklab/intermine,joshkh/intermine,JoeCarlson/intermine,tomck/intermine,tomck/intermine,justincc/intermine,Arabidopsis-Information-Portal/intermine,justincc/intermine,kimrutherford/intermine,justincc/intermine,Arabidopsis-Information-Portal/intermine,justincc/intermine,drhee/toxoMine,elsiklab/intermine,JoeCarlson/intermine,zebrafishmine/intermine,JoeCarlson/intermine,JoeCarlson/intermine,joshkh/intermine,justincc/intermine,JoeCarlson/intermine,joshkh/intermine,tomck/intermine,drhee/toxoMine,justincc/intermine,Arabidopsis-Information-Portal/intermine