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生理 せいり活性 かっせい物質 ぶっしつでした
seirikasseibusshitsudeshita

敬
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Noun
, 
Desu Copula

The polite past form of 生理活性物質

1. Was a biologically active substance.

Past/Perfective
, 
Polite

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生理活性物質でした

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