The primer pairs were CaMV forward: 5ATGGTGGAGCACGACACTCT 3and BKT (internal) reverse: 5GTA-GAAGAGGCGGAATGCTG 3and also with the BKT (internal) forward5F-TGGGCGACACAGTATCACAT 3and poly A reverse 5GCTCAA-CACATGAGCGAAAC 3(synthesized by Sigma–Aldrich, USA). PCRwas performed as mentioned earlier.