腸内 ちょうない細菌 さいきん そうじゃなかったです
chōnai saikin sōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 腸内細菌叢

1. Wasn't gut microbiota.; Wasn't intestinal flora.

Past/Perfective
Negative
Polite
Casual Register