Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
단백성의 물질은 생명체의 중요한 구성 요소입니다.danbaegseong-ui muljil-eun saengmyeongche-ui jungyohan guseong yoso-imnida.Albuminoid substances are important components of living organisms.