PCDH1 and infection: More recently, we identified protocadherin-1 (PCDH1) as a critical determinant of attachment, entry, and infection by New-World hantaviruses, but not their Old-World counterparts, in primary human microvascular endothelial cells (Jangra et al., 2018), which are major targets of hantavirus infection in vivo (Mackow and Gavrilovskaya, 2009).