"atp6v1b2 knockdown zebrafish showed developmental defects in multiple organs and systems. However Atp6v1b2 c.1516C>T knockin mice displayed obvious cognitive defects but normal hearing and cochlear morphology. Impaired hippocampal CA1 region and weaker interaction between the V1E and B2 subunits in Atp6v1b2(Arg506X//Arg506X) mice were observed."xsd:string