ITGB3 and COVID-19: In the lungs of patients who died from COVID-19, megakaryocytes were found in the interstitial alveolar capillaries with the presence of aspects of nuclear hyperchromasia and atypia identified with specific immunohistochemical methods by means of staining positivity for CD61, in association with platelets; platelets within small vessels together with fibrin networks aggregate inflammatory cells including neutrophils and monocyte-macrophages [23].