腸内 ちょうない細菌 さいきん そうじゃありませんでした
chōnai saikin sōjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 腸内細菌叢

1. Was not gut microbiota.; Was not intestinal flora.

Past/Perfective
Negative
Polite
Terminal Form