濾過 ろか性病 せいびょう原体 げんたいでしょう
rokaseibyōgentaideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 濾過性病原体

1. Probably filtering pathogens.; Likely a filtered pathogen.

Polite
Presumptive
Conjecture