SELP and myeloproliferative neoplasm: Immunohistochemical results (Fig. 3A) showed that the expression of p-selectin in BM from the MPN model was much higher than that in BM from normal mice, and the confocal imaging results (Fig. 3B-C) also showed that the expression of p-selectin in BMEC from the MPN model was much higher than that in BMEC from the normal mouse model.