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Table 1 Analysis of recombinants.

From: Tuberculosis vaccine strain Mycobacterium bovis BCG Russia is a natural recA mutant

BCG substrain no. of HygR colonies no. of analyzed HygR transformants spontaneously HygR
    homologous recombinants illegitimate recombinants  
recA+ substrains      
   Pasteur 54 11 2 3 6
   Frappier 90 9 2 1 6
   Denmark 377 21 10 2 9
Σ recA+ 521 41 14 6 21
recA- substrain      
   Russia 72 23 0 16 7
  1. Analysis of recombinants in BCG substrains Pasteur, Frappier, Denmark, and Russia following transformation with recA targeting plasmid pGEM7-recA::3xstop-hsp60-sacB-hyg-aph