たん細胞 さいぼう生物 せいぶつでしょう
tansaibōseibutsudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 単細胞生物

1. Single-celled organism, probably.; It will likely be a single-celled organism.

Polite
Presumptive
Conjecture