ヒト免疫 めんえき不全 ふぜんウイルスであれば
hitomen'ekifuzen'uirusudeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of ヒト免疫不全ウイルス

1. If it were human immunodeficiency virus; If it is human immunodeficiency virus

Ba Conditional