restriction mapping , deletion studies and hybridization studies suggest that these arss , which are probably less than 350 base-pairs in size , share one common feature : each is located close to , but not within , a repetitive sequence ( 131 ) of approximately 10 ( 3 ) to approximately 1.5 x 10 ( 3 ) base-pairs in length .
C1521970
feature
C1444754
length