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
병리과에서 일하는 의사들은 질병의 원인을 연구합니다.Byeongrigwaeseo ilhaneun uisadeul-eun jilbyeong-ui won-in-eul yeonguhamnida.Doctors working in pathology study the causes of diseases.