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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «D»:

  1. DNA sequence, draft DNA sequence, draft
    DNA sequence, draft: Sequence of a DNA with less accuracy than a finished sequence. In a draft sequence, some segments are missing or are in the wrong order or are oriented incorrectly. A draft sequence is as opposed to a finished DNA sequence....
  2. DNA sequence, finished DNA sequence, finished
    DNA sequence, finished: A DNA sequence in which the bases are identified to an accuracy of no more than 1 error in 10,000 and are placed in the right order and orientation along a chromosome with almost no gaps. A finished sequence is as opposed to a draft DNA sequence....
  3. DNA splicing, alternative DNA splicing, alternative
    DNA splicing, alternative: See Alternative splicing....
  4. DNA technology, recombinant DNA technology, recombinant
    DNA technology, recombinant: A series of procedures used to join together (recombine) DNA segments. A recombinant DNA molecule is constructed (recombined) from segments from 2 or more different DNA molecules. Under certain conditions, a recombinant DNA molecule can enter a cell and replicate there, ...
  5. DNA virus DNA virus
    DNA virus: A virus in which the genetic material is DNA rather than RNA. The DNA may be either double- or single-stranded. Major groups of double-stranded DNA viruses (class I viruses) include the adenoviruses, the herpes viruses, and the poxviruses. Major groups of single-stranded DNA viruses (clas...
  6. DNA, coding DNA, coding
    DNA, coding: A sequence of DNA that codes for protein. Coding DNA sequences are separated by long regions of DNA called introns that have no apparent function. Coding DNA is also known as an exon....
  7. DNA, junk DNA, junk
    DNA, junk: See: Junk DNA....
  8. DNA, mitochondrial DNA, mitochondrial
    DNA, mitochondrial: Mitochondrial DNA (mtDNA) is the DNA of the mitochondrion, a structure situated in the cytoplasm of the cell rather than in the nucleus (where all the other chromosomes are located). All mtDNA is inherited from the mother. There are 2 to 10 copies of the mtDNA genome in each mit...
  9. DNA, nongenetic DNA, nongenetic
    DNA, nongenetic: Through the marvelous medium of the Internet, we have discovered that DNA need not refer to deoxyribonucleic acid. Specifically, in an e-mail entitled " A day in the life of a specialist registrar" from Glascow, Scotland we read that in gynecology outpatient clinic, the sp...
  10. DNA, repetitive DNA, repetitive
    DNA, repetitive: DNA sequences that are repeated in the genome. These sequences do not code for protein. One class termed highly repetitive DNA consists of short sequences, 5-100 nucleotides, repeated thousands of times in a single stretch and makes up satellite DNA. Another class termed moderately ...
  11. DNA, satellite DNA, satellite
    DNA, satellite: DNA that contains many tandem (not inverted) repeats of a short basic repeating unit. Satellite DNA is located at very specific spots in the genome (on chromosomes 1, 9, 16 and the Y chromosome, the tiny short arms of chromosomes 13-15 and 21 and 22, and near the centromeres of chrom...
  12. DNR DNR
    DNR: Do not resuscitate. See also Advance medical directives....
  13. DNS DNS
    DNS: On a prescription, Do Not Substitute. If a physician orders a particular drug and writes DNS on the prescription, that tells the pharmacist not to substitute a generic version or any other drug for the prescribed drug....
  14. Do not resuscitate order Do not resuscitate order
    Do not resuscitate order: A request not to have cardiopulmonary resuscitation (CPR) done if the heart stops or breathing ceases. One can use an advance directive form to make this request or one can tell the doctor to put a DNR order in the medical record. DNR orders are accepted by doctors and hos...
  15. DOB DOB
    DOB: Abbreviation standing for the date of birth. As examples, "DOB: 10/12/97" in the U.S. indicates the date of birth is October 12, 1997 whereas "DOB: 10/12/97" in Great Britain indicates the date of birth is 10 December 1997....