Autoradiogram

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  radiograph \ra"di*o*graph\ (r[=a]"d[i^]*[-o]*gr[a^]f), n.
     [Radio- + -graph.]
     1. An instrument for measuring and recording solar radiation.
        [Webster 1913 Suppl.]
  
     2. An image or picture produced upon a sensitive surface, as


        of a photographic or fluorescent plate, by some form of
        penetrating radiation other than light, as X-rays, beta
        rays, etc.; esp., a picture of the internal structure of
        opaque objects traversed by the rays; a skiagraph. When
        the picture is produced upon photographic film by X-rays,
        the picture is usually called an {X-ray photo} or {X-ray}.
        When an image is produced on photographic film by a
        radioactive substance in close proximity to the film, in a
        manner so as to record the spatial distribution of the
        radioactive substance, the resulting image is called an
        {autoradiograph} or {{autoradiogram}}.
        [Webster 1913 Suppl. +PJC]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Autoradiogram \Au`to*ra"di*o*gram\, n. [Auto- + radiogram.]
     (Biochemistry)
     an image produced upon photographic film by exposure of the
     film to a radioactive substance in close proximity to
     (usually in contact with) the film.
  
     Note: Recording the distribution of radioactive materials on
           an autoradiogram is a technique much used in
           biochemical research as part of analytical procedures,
           in which radioactively labeled substances are subjected
           to a separation process (such as electrophoresis) which
           can help to characterize the substance, and the
           resulting distribution of the labeled substance is
           recorded on an autoradiogram. In microbiology and cell
           biology, autoradiograms may be made on the same film as
           a photomicrograph, permitting observation of the
           distribution of labeled compounds within a cell.
           [PJC]