Transcriptional analysis of stage specific expression of Ov CaBP gene by RT-PCR. Lane M, 1, 2, 3, 4, 5, and 6 show a molecular weight marker, negative control (without template), metacercariae, 2-week-old juvenile, 3-week-old juvenile, 1-month-old juvenile, and 2-month-old adult worm, respectively. Panel A shows the RT-PCR amplification of Ov CaBP gene in each stage whereas panel B shows the amplification of actin gene in each stage as an internal control. Electrophoresis was performed on 1% agarose gel.