胚性 はいせい かん細胞 さいぼうではありませんでした
haiseikansaibōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 胚性幹細胞

1. Was not an embryonic stem cell.; Was not of embryonic stem cell origin.

Past/Perfective
Negative
Polite
Formal Register