CD5 and myocardial infarction: A complex of 7 proteins (cyclophilin A, an antigen-like cluster of differentiation 5 (CD5), cell-surface glycoprotein mucin cell surface-associated protein 18 (MUC-18), collagen chain-1, salivary α-amylase 1, C-reactive protein and multimerin-2) was determined, independently associated with myocardial infarction and with its more favourable prognosis.