Colostrum == In cattle, the immunoglobulin G subtype 1 (IgG1) and not immunoglobulin A (IgA) is the predominant secretory immunoglobulin in colostrum and milk [39]. this reason, in the last few years, a newmarkervaccine became commercially available containing a double deletion related to genes coding for gE and the synthesis of the thymidine-kinase (tk) enzyme, […]