Thyroid transcription factor-1 (TTF-1) is considered as a reliable marker for differential diagnosis in distinguishing primary adenocarcinomas of the lung from extrathoracic origins. We previously ...
Thyroid transcription factor-1 (TTF-1), also known as NKX2-1, is a tissue-specific homeodomain transcription factor expressed only in lung, bronchi, thyroid grand and forebrain. In the lung, TTF-1 is ...