ITGB3 and Sepsis: We observed that the DEL-1 receptor avβ3 integrin (comprising the av integrin CD51 and the β3 integrin CD61) was expressed in the bone marrow of neonate mice to a similar extent with adult mice, in either steady state or upon sepsis (assessed by flow cytometry analysis in bone marrow total cells, Supplementary Fig. 9a, b).