ヒト しろ血球 けっきゅう抗原 こうげんだったら
hito shiro kekkyūkōgendattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of ヒト白血球抗原

1. If it were a human leukocyte antigen; If it were HLA

Tara Conditional