刺激 しげき伝導 でんどう けいじゃなかったです
shigeki dendōkeijanakattadesu

Noun
Desu Copula

The polite, past negative form of 刺激伝導系

1. Wasn't the conduction system.; Wasn't the stimulus conduction system.

Past/Perfective
Negative
Polite
Casual Register