Objective To study the expression of plasma membrane Ca~(2+)-ATPase isoforms 1-4and the splice variants at sites A and C in the neonatal rat vestibular organ.Methods Ten rats at postnatal 2days(P2)were decapitated and their vestibular organs(macula utriculi and macula sacculi)were isolated.The total proteins of the vestibular organs were extracted.The expression of PMCA1-4splice variants at sites A and C was detected by RT-PCR.Results The splice variants of PMCA1-4at sites A and C in macula utriculi and mac...