骨髄 こつずい きゅうじゃなかったです
kotsuzuikyūjanakattadesu

Noun
Desu Copula

The polite, past negative form of 骨髄球

1. Wasn't a myeloblast.; Wasn't bone marrow cells.

Past/Perfective
Negative
Polite
Casual Register
Physiology