Fig. 2From: A comparative study of two liquid-based preparation methods: membrane-based and sedimentation in fine needle aspiration cytology diagnosis in thyroid nodulesPapillary structure. a (× 100 HE) and c (× 400 HE), membrane-based smears with flat papillary tumor and crowded cell masses; b (× 100 HE) and d (× 400 HE), sedimentation smears with obvious three-dimensional papillary structure and fibrovascular axisBack to article page