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. 2021 Apr 28;9:645496. doi: 10.3389/fcell.2021.645496

FIGURE 1.

FIGURE 1

Bone marrow vascular structure. (A) Scheme of the organization of BM vasculature at different magnifications. The BM vasculature is highly interconnected with the tissue matrix, with small arterioles covered by pericytes entering the marrow from the bone and merging with the venous system via a network of sinusoidal capillaries. The vascularized marrow space is populated by hematopoietic and stromal cells embedded in a unique extracellular matrix. (B) Representative Z-stack two-photon microscopy image of vascular organization in the mouse calvarial bone marrow, with Nestin-GFP peri-arteriolar pericytes (green), TRITC-dextran labeled vascular lumen (red) and second harmonic generation (SHG) bone matrix (blue).