PCR to detect t(14;18) at the mbr.

PCR was performed as described in “Materials and methods” and subsequently subjected to Southern analysis by means of a radiolabeled internal oligonucleotide probe. − indicates negative water control; +, positive control. Lanes 1 through 16 are pediatric follicular lymphoma cases. A faint band was present in lane 11; this was confirmed on longer exposure of the autoradiogram. The lane numbers correspond directly to the patient and case numbers in Tables 1 and 2.