The same study mentioned above by Turillazzi et al. found a moderate immunohistochemical reaction for tryptase at myocardial infarction sites 0–6 h old, along with CD15, IL-1β, IL-6, TNF-α, IL-8, CD18, ICAM-1, IL-15, and MCP-1 [26]. Here, IL15 is linked to myocardial infarction.