Figure 1. DNA amplification by nPCR in semen samples from infected rams with PTB in agarose gel electrophoresis (1.5%). Lanes: M: molecular marker 50 pb; P: positive control (MAP DNA MAP ATCC #700535); N: negative DNA control of ram semen; DNA samples from semen from animals included in the experiment: 1 (positive), 2 (negative), 3 (positive), 4 (negative), 5 (positive), 6 and 7 (negative).
