RNA sequences that serve as templates for protein synthesis. Bacterial mRNAs are generally primary transcripts in that they do not require post-transcriptional processing. Eukaryotic mRNA is synthesized in the nucleus and must be exported to the cytoplasm for translation. Most eukaryotic mRNAs have a sequence of polyadenylic acid at the 3' end, referred to as the poly(A) tail. The function of this tail is not known for certain, but it may play a role in the export of mature mRNA from the nucleus as well as in helping stabilize some mRNA molecules by retarding their degradation in the cytoplasm.
    

concept

in situ hybridisation to avian hindbrain

Drosophila embryo polarity - bicoid mRNA

Polarity in Drosophila oocyte - gurken mRNA

Hoxa-2 in situ hybridisation in chick embryo

Drosophila embryo polarity - oskar mRNA

cDNA preparation and characterization / edited by Sherman M. Weissman.

Drosophila embryo polarity

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Hoxa-2 in situ hybridisation in chick embryo

in situ hybridisation to avian hindbrain

cDNA preparation and characterization / edited by Sherman M. Weissman.

Drosophila embryo polarity - oskar mRNA

Drosophila embryo polarity