“…However, although the levels of both proteins increased during infection, the pattern of response was different when analyzing the different clinical stages and pathological forms of PTB. In most of the conditions evaluated in ruminants, the increase in the APPs’ levels was proportional to the severity of the lesions and clinical signs [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ]. In the case of mycobacterial diseases, studies carried out in tuberculous animals also showed increases in serum APPs according to the severity of the lesions present [ 29 , 30 ].…”