ImageTitle = 'Expression of microRNA miR-124a in the developing mouse embryo'; ImageDescription = 'MicroRNAs (miRNAs) are small (22nt) non-coding RNAs that regulate gene expression by base pairing to target mRNAs. miRNAs are synthesized by RNA polymerase II as longer precursors that are processed by the ribonucleases Drosha and Dicer.'; Professor = 'Maniatis'; faculty_url = 'tom-maniatis'; d.write('

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