Yeast artificial chromosomes and their use in the control of gene expression
First Claim
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1. A murine embryonic stem cell, transformed with a foreign gene or gene locus of at least 100 kb wherein said cell is essentially free of yeast DNA.
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Abstract
Embryonic stem cells or other cells (not prokaryotic or yeast) that are essentially free of yeast DNA are prepared from suitably marked yeast artificial chromosomes and used to transfer DNA segments of considerable size into organisms.
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8 Claims
- 1. A murine embryonic stem cell, transformed with a foreign gene or gene locus of at least 100 kb wherein said cell is essentially free of yeast DNA.
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8. A murine embryonic stem cell, comprising a foreign gene or gene locus of at least 100 kb and a marker gene, separate from the foreign gene or gene locus, which allows selection by one or more properties in the cell, wherein said cell is essentially free of yeast DNA.
Specification