病原 びょうげん 生物 せいぶつじゃなかったです
byōgembiseibutsujanakattadesu

Noun
Desu Copula

The polite, past negative form of 病原微生物

1. Was not a pathogen.; Was not a germ.; Was not infectious.

Past/Perfective
Negative
Polite
Casual Register