The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 31, 1994
Filed:
Jul. 13, 1990
David P Carlson, Gaithersburg, MD (US);
Paul C Watkins, Gaithersburg, MD (US);
Leonard Klevan, Gaithersburg, MD (US);
Life Technologies, Inc., Gaithersburg, MD (US);
Abstract
The present invention discloses a DNA marker ladder useful in Southern blot hybridizations. The ladder is made up of pooled DNA restriction endonuclease digests, where each restriction digest contains at least one fragment complementary to a probe and at least one fragment not complementary to the probe. The regions of complementarity between the probe and the complementary fragments are double-stranded segments of the fragments. The ladder is characterized by an approximately even spacing of bands, resulting from choosing fragments having an logarithmic size distribution. Kits incorporating this ladder and a probe or means for making a probe or a probe and a means for labeling a probe are also disclosed.