Fig. 1. siRNA properties of vsRNAs in BHK-21 cells.
(A) Length distribution and abundance of positive- or negative-strand vsRNAs from cells 2 or 3 dpi with NoV or NoVΔB2. (B) Total counts of pairs of complementary 22-nt vsRNAs of NoV or NoVΔB2 in each distance category (in nucleotides) between 5′ and 3′ ends of a complementary vsRNA pair, defined as 0 for perfect base-paired 22-nt vsRNAs with blunt ends, –2 for pairs with 2-nt overhang at the 3′-end of each strand (α and β), or 20 for pairs with 20-nt overhang at the 5′-ends (α and γ).