Apparatus for determining base sequence of nucleic acid
First Claim
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1. An apparatus for determining base sequence of nucleic acid, comprising:
- a pipe-shaped gel supoprt which contains a gel and which constitutes a migration path for nucleic acid fragments labeled by radio isotope;
electrode solution layers installed at both ends of said gel support;
a power source for applying potential across said electrode solution layers;
means for photoelectric conversion; and
a ring-shaped radiation detector for detecting radioactive emissions, converting the detected emissions to light and guiding the generated light to said means for photoelectric conversion, said ring-shaped radiation detector being provided to circumscribe said gel support at a middle portion thereof and being intimately contacted thereto or spaced thereform to form a gap therebetween.
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Abstract
Nucleic acid fragments labelled by radio isotape migrate at speeds that increase as the molecular weights decrease in a migration path served with a potential at both ends thereof. The migration path is constituted by a pipe-shaped gel support such as a glass tube. A ring-shaped scintillator is provided at a middle portion of the migration path to circumscribe the gel support, and whereby the beta rays are detected. A window may be formed in the glass tube at a portion opposed to the scintillator, so that the beta rays are not attenuated by the glass.
22 Citations
10 Claims
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1. An apparatus for determining base sequence of nucleic acid, comprising:
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a pipe-shaped gel supoprt which contains a gel and which constitutes a migration path for nucleic acid fragments labeled by radio isotope; electrode solution layers installed at both ends of said gel support; a power source for applying potential across said electrode solution layers; means for photoelectric conversion; and a ring-shaped radiation detector for detecting radioactive emissions, converting the detected emissions to light and guiding the generated light to said means for photoelectric conversion, said ring-shaped radiation detector being provided to circumscribe said gel support at a middle portion thereof and being intimately contacted thereto or spaced thereform to form a gap therebetween. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification