抗原 こうげん抗体 こうたい反応 はんのうでしょう
kōgenkōtaihannōdeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 抗原抗体反応

1. Probably an antigen-antibody reaction.

Polite
Presumptive
Conjecture