せいがんガン物質 ぶっしつではありませんでした
seigambusshitsudewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 制ガン物質

1. Was not a cancer-inhibiting substance.; Was not an anti-cancer substance.

Past/Perfective
Negative
Polite
Formal Register
Medicine