The researchers have identified the following main forms of cardiac troponins in myocardial infarction: a ternary complex consisting of full-size cardiac troponins T and I and troponin C; a ternary complex consisting of truncated cardiac troponin I and integral troponins T and C; a binary complex consisting of truncated cardiac troponin I and troponin C, as well as a number of short fragments of cardiac troponin T and troponin I, formed mainly from the central part of the molecules. Here, TNNI3 is linked to myocardial infarction.