ttc can be converted to insoluble red formazan by the activity of
Tetrazolium chloride In the TTC assay (also known as TTC test or tetrazolium test), TTC is used to differentiate between metabolically active and inactive tissues. 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 in its unreacted state in areas of necrosis since these enzymes have either denatured or degraded.
Red blood cell Red blood cells-- also known as RBCs, red cells,[1] red blood corpuscles, haematids, erythroid cells or erythrocytes (from Greek erythros for "red" and kytos for "hollow vessel", with -cyte translated as "cell" in modern usage), are the most common type of blood cell and the vertebrate's principal means of delivering oxygen (O2) to the body tissuesâ€”via blood flow through the circulatory system.[2] RBCs take up oxygen in the lungs, or gills of fish, and release it into tissues while squeezing through the body's capillaries.