Description  Claims  Drawing  Cited references 

EP0001622A1   [0006] 
US4175006A   [0007] 
CN200910051613   [0038] 
CN200910051615   [0039] 

APPLIED AND ENVIRONMENTAL MICROBIOLOGY   [0008] 
Molecular Cloning: Laboratory Manual   [0025] 
Gene replacement using pretreated DNA   [0030]