To mimic early stage retinal development, the researchers needed to build microscopic gradients for solutions in which to bathe the stem cells to initiate specific differentiation paths.

为了模拟视网膜发育的早期阶段，研究人员需要构建出浓度梯度差异极其细微的溶液来培养细胞以使它们向不同的途径分化。

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The effect of the microscopic digital interaction system on experimental teaching of medical morphology is evaluated in terms of classroom teaching and stage performance.

以课堂教学及阶段绩效考核为主要内容，评价了显微数码互动系统在医学形态学实验教学中的效果。

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The microscopic appearance of the "end stage kidney" is similar regardless of cause, which is why a biopsy in a patient with chronic renal failure yields little useful information.

不管病因如何，终末期肾显微结构相似，因此肾活检在判断病因方面意义不大。

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