Fig. 5. Comparison of PCR amplified DNA A fragments of cotton leaf crumple virus (CLCrV) and cotton leaf curl virus (CLCuV). Lane 1). 1 kb standard. The upper fragments of CLCuV DNA A (lane 2) and CLCrV DNA A (lanes 3) were amplified with primers R500 and F1800. The lower fragments of CLCuV DNA A (lanes 4) and CLCrV DNA A (lane 5) were amplified with primers F500 and R1800. PCR amplified DNA fragments were analyzed by electrophoresis in a 0.8% agarose gel.