P. monodon (5 g) were divided into 4 groups, each group contained 10 shrimps. The first
group was injected with 150 mM NaCl, the second group was injected with GFP-dsRNA (unrelated
dsRNA), the third and the fourth groups were injected with PAZ-dsRNA and PIWI-dsRNA,
respectively. The dsRNAs were injected into the shrimp twice at 0 h and 24 h at the concentration
of 2.5 μg/ 1 g of shrimp body weight in a volume of 50 μl. The haemolymph was collected at 24 h,
48 h and 72 h after the first injection. Total RNA was isolated from the haemolymph and the
transcript of Actin and PemAGO isoforms were detected as described below.