Sequence, regulatory
A sequence of bases in DNA that controls gene expression.
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- Sequencing
Determining the order of nucleotides (base sequences) in a DNA or RNA molecule, or determining the order of amino acids in a protein.
- Sequester
1. In medicine, to set apart, detach or separate a small portion of tissue from the rest. May be naturally occurring or iatrogenic. 2. In bone, for a piece of dead bone to separate from the sound bone. 3. In biochemistry, to isolate a constituent of a system by chelation or other means. From the […]
- Serendipity
An accidental and fortunate discovery. A celebrated instance of serendipity in biomedical research took place in 1928 at St Mary’s Hospital in London. While studying staphylococci (staph bacteria), the physician and microbiologist Alexander Fleming happened to noticed that on a dish containing agar on which he had been growing germs, near some mold, the germs […]
- Serial amnioreduction
The repeated removal of large volumes of amniotic fluid by amniocentesis. The rationale for serial amnioreduction is to prevent preterm delivery related to polyhydramnios (too much amniotic fluid) and to improve fetal hemodynamics by decreasing pressure on the surface of the placenta.
- Serial transverse enteroplasty
Abbreviated STEP. A surgical procedure designed to treat the short bowel syndrome. STEP is based on the idea that stapling V-shapes into alternating sides of the bowel will decrease its width and increase its length. A cutting stapler is used on alternate sides of the remaining small bowel to create a zigzag passageway.