骨髄 こつずい芽球 がきゅうじゃなかったです
kotsuzuigakyūjanakattadesu

Noun
Desu Copula

The polite, past negative form of 骨髄芽球

1. Was not a blast cell.; Wasn't a bone marrow blast.

Past/Perfective
Negative
Polite
Casual Register
Physiology