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.
The synthesis of proteins is catalyzed by the ribosome. The ribosome is made up of a large and small subunit, and is a large enzyme comprised mostly of ribosomal RNA (rRNA), with proteins interspersed like islands in a sea of RNA. Besides the rRNA, the ribosome contains binding sites for tRNA and mRNA.