Fig. 1From: Establishment of primary human breast cancer cell lines using “pulsed hypoxia” method and development of metastatic tumor model in immunodeficient miceMorphology of primary breast cancer cells in vitro. Cells were prepared by the collagenase I dissociation or by the collagenase-free method, as indicated. Phase-contrast images of cells growing as monolayer at 1–2 passages. Images were captured with ZOE Fluorescent Cell Imager (BioRad)Back to article page