Fig. 1From: Could hemophagocytic lymphohistiocytosis be the core issue of severe COVID-19 cases?Proposed diagnostic scheme for patients with COVID-19. Abbreviations: ALT, alanine aminotransferase; AST, aspartate aminotransferase; COVID-19, coronavirus disease 2019; HLH, hemophagocytic lymphohistiocytosis; IL-2, interleukin-2; LDH, lactate dehydrogenase; NK, natural killer; PT, prothrombin time; aPPT, activated partial thromboplastin timeBack to article page