The white compound is enzymatically reduced to red TPF (1,3,5-triphenylformazan) in living tissues due to the activity of various dehydrogenases (enzymes important in oxidation of organic compounds and thus cellular metabolism), while it remains as white TTC in areas of necrosis since these enzymes have been either denatured or degraded.
The white compound is enzymatically changed into red TPF (1,3,5-triphenylformazan) in living tissues due to the activity of various dehydrogenases (enzymes involved in organic compound oxidation and cellular metabolism), while it remains as white TTC in necrotic areas because these enzymes have been denatured or degraded.