Therefore, we passively immunised human-liver chimeric uPA+/+-SCID mice with either a pool from (i) with (ii), n=3; or (iii) with (iv), n=2; or naïve mouse serum/PBS to assess potential prevention of HBV/HDV co-infection (figure 4 and online supplemental table 1). This evidence concerns the gene PLAU and coinfection.