Sup Fig4. The ectodomain of recombinant HA0 could not be stabilized after cleavage of the trimerization domain from the fusion A/California/07/2009 rHA protein preparations WangJiong 2017 The ectodomain of recombinant HA0 could not be stabilized after cleavage of the trimerization domain from the fusion A/California/07/2009 rHA protein preparations