DNA (deoxyribonucleic acid) The molecule that carries genetic information in all living systems (see genetic code). The DNA molecule is formed in the shape of a double helix from a great number of smaller molecules (see nucleotides). The workings of the DNA molecule provide the most fundamental explanation of the laws of genetics.
Getting an epidural. Watch one mom in labor get an epidural for pain relief. The medication is usually a combination of a local anesthetic and a narcotic. Local anesthetics block sensations of pain, touch, movement, and temperature, and narcotics blunt pain without affecting your ability to move your legs.
An epidural injection is an injection of medication into the space around the spinal cord, also known as the epidural space, to provide temporary or prolonged relief from pain or inflammation.