Fig. 6
From: Pathogenicity comparison of duck Tembusu virus in different aged Cherry Valley breeding ducks
Neutralizing antibodies in the serum from DTMUV-infected ducks. Green and red lines represent critical threshold values of negative and positive antibodies, respectively. Data were expressed as mean ± SD (n = 3). The statistical differences between both groups were evaluated by Student’s t-test. * p < 0.05, ** p < 0.01