薬剤 やくざい抵抗 ていこう せいではありませんでした
yakuzaite ikō seidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 薬剤抵抗性

1. Was not drug-resistant.; Did not have drug resistance.

Past/Perfective
Negative
Polite
Formal Register