HSP90B2P and viral infectious disease: Preincubation of the virus with hSP-D resulted in an increase of the virus infection compared to non-preincubated virus (p = 0.0014, two-tailed unpaired Student’s t-test), while no effect was observed with AP-SP-A (p > 0.05, two-tailed unpaired Student’s t-test) (Figure 4A).