Cervical stenosis is a narrowing of the spinal canal which protects the spinal cord.atients who present with symptoms suggestive of cervical stenosis are usually worked up with a neurological evaluation and a CT scan or MRI scan. An MRI scan is particularly good at evaluating the spinal canal, the spinal cord and the nerves coming and going from the spine.
The ribosome itself is highly complex. It is made up of dozens of distinct proteins (the exact number varies a little bit between species) as well as a few specialized RNA molecules known as ribosomal RNA (rRNA). Note â these rRNAs do not carry instructions to make specific proteins like mRNAs.
Structure. The ribosome is made up of two parts, called subunits. The larger of the two subunits is where the amino acids get added to the growing protein chain. The small subunit is where the mRNA binds and is decoded.Each of the subunits is made up of both protein and ribonucleic acid (RNA) components.The small ribosomal subunit is made up of one ribosomal RNA (rRNA) and approximately twenty-one proteins in prokaryotes (bacteria) and approximately thirty-three proteins in eukaryotes (mammals).n fact, rRNAs make up most of the mass of the ribosome. The proteins bind to various parts of the rRNAs to fill in the ribosome's structure. A color-coded cryo-EM map of an E. coli ribosome showing the interface between the small (30S) and large (50S) ribosomal subunits.