Summary of clone numbers identified by LAM-PCR and GeneScan analysis before and after busulfan. (A) Animal RQ2314. (B) Animal RQ2297. Criteria for scoring clones as present are given in “Materials and methods.” A total of 18 replicate LAM-PCR reactions using 100 ng template was performed for each sample, and the total number of individual clones meeting criteria was enumerated and graphed.