The availability of reliable germline competent rat embryonic stem cell (ESC) lines that can be genetically manipulated provides an important tool for generating new rat models. Here we describe the process for culturing rat ESCs, microinjecting the ESCs into rat blastocysts, and transferring the embryos to surrogate dams by either surgical or non-surgical embryo transfer techniques to produce chimeric animals with the potential to pass on the genetic modification to their offspring.
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The periocular mesenchyme (POM) gives rise to key structures in the ocular anterior segment, and its malformation leads to anterior segment dysgenesis (ASD) with iridocorneal angle (ICA) abnormalities. However, the transcriptional profile of the POM and the regulatory mechanisms governing cell-fate decision during anterior eye and ICA development remain poorly understood. In this study, we performed a comprehensive time-series analysis by sequencing rat anterior ocular samples collected at five consecutive perinatal stages: embryonic days 16.
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