Process of producing highly transformable cells and cells produced thereby
DCFirst Claim
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1. A process for producing transformable E. coli cells of improved competence by a process comprising the following steps in order:
- (a) growing E. coli cells in a growth-conducive medium at a temperature of 18°
C. to 32°
C.;
(b) rendering said E. coli cells competent; and
(c) freezing the cells.
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Abstract
Process for producing transformable, competent cells including the steps of growing the cells in a growth conducive medium at a temperature of less than 37° C. and freezing the cells, and cells produced by the process.
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Citations
24 Claims
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1. A process for producing transformable E. coli cells of improved competence by a process comprising the following steps in order:
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(a) growing E. coli cells in a growth-conducive medium at a temperature of 18°
C. to 32°
C.;(b) rendering said E. coli cells competent; and (c) freezing the cells. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. Transformable E. coli cells of improved competence produced by the following steps in order:
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(a) growing E. coli cells in a growth-conducive medium at a temperature of 18°
C. to 32°
C.;(b) rendering said E. coli cells competent; and (c) freezing the cells. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification