せいがんガン物質 ぶっしつじゃなかったです
seigambusshitsujanakattadesu

Noun
Desu Copula

The polite, past negative form of 制ガン物質

1. Wasn't an anti-cancer substance.; Wasn't a cancer-preventative substance.

Past/Perfective
Negative
Polite
Casual Register
Medicine