骨芽 こつが細胞 さいぼう しゅではありませんでした
kotsuga saibō shudewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 骨芽細胞腫

1. Was not osteosarcoma.; Was not a bone sarcoma.

Past/Perfective
Negative
Polite
Formal Register
Medicine