細胞 さいぼう分画 ぶんかく ほうじゃなかったです
saibōbunkakuhōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 細胞分画法

1. Cell fractionation wasn't done.; It wasn't cell fractionation.

Past/Perfective
Negative
Polite
Casual Register