RESUMEN
AIM: To investigate the intraocular growth characteristics of mice embryonic stem (ES) cells in nude mice.METHODS: Murine embryonic stem cells (D3 cell lines) were cultured and maintained in an undifferentiated state in vitro, then transplanted into the eyes of nude mice. In 6-45 d, the nude mice were executed for Morphological and immunohistochemical examinations.RESULTS: ES cells were developed into masses which enlarged gradually in the anterior chamber and vitreous cavity. Morphological examination showed different component: cysts, sheets and cords of medullary epithelium and rosettes in the eyes of the nude mice. Most of cells were highly stained by NSE, and some cells were moderately stained by GFAP.CONCLUSION: The embryonic stem cells(D3 cell lines) could differentiated into medulloepithelioma-like tissue in the anterior chamber and vitreous cavity of the Balb/c nude mice.