Sinusoid capillaries has large pores within their endothelial cells and are the leakiest.
These capillaries are the most uncommon and "leakiest" kind. Large molecules and even cells can be exchanged through sinusoid capillaries. They may do this because their capillary wall has numerous more significant gaps in addition to pores and smaller gaps.
Additionally, the adjacent basement membrane has numerous openings and is not complete. Sinusoid capillaries can be found in the liver, spleen, and bone marrow, among other tissues. These capillaries, for instance, enable freshly made red blood cells to reach the bloodstream and start circulating in your bone marrow.
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