[Asymmetry: rule or exception?].
D000818:Animals; D001001:Anura / Q000033:anatomy & histology*; D001921:Brain / Q000033:anatomy & histology*; D004524:Eels / Q000033:anatomy & histology*; D013788:Thalamus / Q000033:anatomy & histology*; D014562:Caudata / Q000033:anatomy & histology*
Asimmetria: regola o eccezione?