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Drugs and diseases reference index

Drugs and diseases reference index
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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «R»:

  1. Receptor, T-cell Receptor, T-cell
    Receptor, T-cell: A molecule on the surface of T-lymphocytes (T-cells) for recognizing specific antigens (foreign substances or microbes such as viruses)....
  2. Receptor, visual Receptor, visual
    Receptor, visual: The layer of rods and cones, the visual cells, of the retina....
  3. Recessive Recessive
    Recessive: A condition that appears only in individuals who have received two copies of a mutant gene, one copy from each parent. The individuals with a double dose of the mutated gene are called homozygotes. Their parents, each with a single dose of the mutated gene, appear normal and are called he...
  4. Recessive, autosomal Recessive, autosomal
    Recessive, autosomal: A genetic condition that appears only in individuals who have received two copies of an autosomal gene, one copy from each parent. The gene is on an autosome, a nonsex chromosome. The parents are carriers who have only one copy of the gene and do not exhibit the trait because t...
  5. Recessive, X-linked Recessive, X-linked
    Recessive, X-linked: A gene on the X chromosome that expresses itself only when there is no different gene present at that locus (spot on the chromosome). For example, Duchenne muscular dystrophy (DMD) is an X-linked recessive disorder. A DMD boy has the DMD gene on his sole X chromosome (and so is ...
  6. Recipient Recipient
    Recipient: In medicine, a recipient is someone who receives something like a blood transfusion or an organ transplant. The recipient is beholden to the donor....
  7. Reciprocal translocation Reciprocal translocation
    Reciprocal translocation: A type of chromosome rearrangement involving the exchange of chromosome segments between two chromosomes that do not belong to the same pair of chromosomes. A specific reciprocal translocation might, for example, involve the swap of material between chromosomes 1 and 19....
  8. Recombinant Recombinant
    Recombinant: A person with a new combination of genes, a combination of genes not present in either parent, due to parental recombination of those genes....
  9. Recombinant clones Recombinant clones
    Recombinant clones: Clones containing recombinant DNA molecules. ...
  10. Recombinant DNA Advisory Committee (RAC) Recombinant DNA Advisory Committee (RAC)
    Recombinant DNA Advisory Committee (RAC): The National Institutes of Health (NIH) panel that oversees gene-therapy research in the U.S....
  11. Recombinant DNA molecules Recombinant DNA molecules
    Recombinant DNA molecules: A combination of DNA molecules of different origin that are joined using recombinant DNA technology....
  12. Recombinant DNA technology Recombinant DNA technology
    Recombinant DNA technology: 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, a...
  13. Recombinant tPA Recombinant tPA
    Recombinant tPA: Recombinant tissue plasminogen activator. See: Tissue plasminogen activator....
  14. Recombination Recombination
    Recombination: The trading of fragments of genetic material between chromosomes before the egg and sperm cells are created. Key features of recombination include the point-to-point association of paired chromosomes (synapsis) followed by the visible exchange of segments (crossing over) at X-shaped c...
  15. RECOMBIVAX-HB RECOMBIVAX-HB
    RECOMBIVAX-HB: A vaccine against hepatitis B (hep B) to stimulate the body's immune system to produce antibodies against the hep B virus....