Fig. 6. Comparison of Db 1 and Db2 coding joints in wild-type and Eb-mutant mice. PCR assays for Db-Jbjoints in thymocyte of wild-type (+/+), Eb^R/R, and Eb^R/Rp53-^/- mice were carried out as in Fig. 1C. PCR products were cloned and sequenced. Sequences of Db 1 or Db2 to different Jb2 rearrangements are shown. Germ-line sequences are shown for comparison. N nucleotides are indicated, and possible P nucleotides are underlined.