The genomic DNA from all samples was obtained and
amplified at least twice on different days. The control and
treated samples for each experiment were individually ampli-fied but developed together in the same agarose gel. Quanti-tative analysis was performed by comparing the percentage
appearance of each band for the control and treated sam-ples. After eliminating the background, quantitative differ-ences were studied using volume and percentage
parameters of the amplified band. Additionally the individ-ual data were grouped together according to the following
criteria: bands of high molecular weight (>800 bp), bands
of intermediate molecular weight (500–800 bp) and bands
of low molecular weight (