H1N1;Human β-NGF Protein;Human HAVCR1 Protein, His Tag;Rhesus Monkey PCSK9 Protein, His Tag;Influenza A H1N1 (A/Brisbane/59/2007) HA protein, His Tag;Influenza A H1N1 (A/California/04/2009) HA protein, His Tag;Influenza A H1N1 (A/Brisbane/59/2007) HA Protein (HA1 Subunit), His Tag;Influenza A H1N1 (A/California/4/2009) HA-specific B cell probe, His Tag;Influenza A H1N1 (A/California/04/2009) HA Protein (HA1 Subunit), His Tag;Influenza A H1N1 (A/California/04/2009) HA Protein (HA0 Subunit) Protein (full length)