Southern blots of transformants. (A) Ecl136II digest with a portion of the β-lactmase gene as the probe. Lanes: 1, GZ3639; 2, B4-1; 3, B9-1; 4, C11-1; 5, D4-1; 6, D6-2; 7, G11-1; 8, G15-1. (B) HindIII digest with the FGTRI5 coding region as the probe. Lanes: 1, GZ3639; 2, B4-1; 3, B9-1; 4, D4-1; 5, D6-2; 6, G11-1; 7, G15-1. In panel B the major band for lanes 1, 3, 4, and 7 is 2.6 kb while the major band in lanes 2, 5, and 6 is 7.0 kb.