the somatic 5s dna from x. borealis ( xbs 5s dna ) and x. laevis ( xis 5s dna ) and a minor oocyte-specific 5s dna from x. laevis ( xit 5s dna ) have been purified , and individual repeating units have been cloned and sequenced .
C0000702
a
C0012854
dna