腸内 ちょうない細菌 さいきん そうじゃないです
chōnai saikin sōjanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 腸内細菌叢

1. It's not gut microbiota.; It's not the gut microbiome.

Negative
Polite
Casual Register