Fig. 5
The PCR productions. The PCR products revealing a 226-bp specific amplicon for ALV were analyzed by 1.5 % agarose gel electrophoresis and stained with ethidium bromide. Lane M, DNA marker DL-2000 (CWBIO, Beijing); 1, 2 × 107 copies/μl; 2, 2 × 106 copies/μl; 3, 2 × 105 copies/μl; 4, 2 × 104 copies/μl; 5, 2 × 103 copies/μl; 6, 2 × 102 copies/μl; 7, 2 × 101 copies/μl; 8, 2 × 100 copies/μl; 9, Negative control