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. 2022 Jan 14;37(3):267–274. doi: 10.1007/s12291-021-01018-4

Fig. 1.

Fig. 1

a primary miRNA (pri-miRNA) transcript is encoded in the cell's DNA and transcribed in the nucleus, processed by an enzyme Dosha and exported into the cytoplasm where it is further processed by Dicer. After strand separation, the mature miRNA represses protein production either by blocking translation or causing transcript degradation [88]. b Upregulated or down regulated miRNA causes diabetic retinopathy