The internal muscles and deep tissu

The internal muscles and deep tissues of the carcass are sterile unless they are subjected to a considerable breakdown of the connective tissue structure and muscle fibers. Similarly, during the process of carcassfabrication, Mechanical tenderization
processes (such as blade tenderization, brineinjection or marination) can
introduces bacteria into the deep tissues of the subprimals (Gill & Penney,
1979; Gill et al., 2005a; Gill et al., 2005b; Sporing, 1999), which can become a
problem if the meat is undercooked