Table 3.

Classification of contraction bands according to CCC9 and SIRT 1 immunohistochemical reactions, according to Morita et al.

Contraction Bands	Particularities
Type 1	Induced by high fever exposure
Type 2	CCC9-positive reaction Specific to acute myocardial infarction
Type 3	CCC9-negative reaction, clear SIRT 1-negative reaction Induced by exposure to low temperatures
Type 4	CCC9-negative reaction, SIRT 1-positive or inconclusive reaction Induced by cardiopulmonary resuscitation attempts