The experiments were mainly carried out on abnormal nuclei from two types of cervical cytology images, which were acquired by different slide preparation, different staining methods, and also under different imaging conditions:1. Herlev (Jantzen et al., 2005) – Pap-smear with Papanicolau (Pap)stained cervical cell images;2. HEMLBC (Zhang et al., 2014b) – manual liquid-based cytology with H&E stained cervical cell images.