The blood-brain barrier trust me
The blood-brain barrier is formed by a tight network of capillaries that protect the delicate tissue of the central nervous system (CNS). This barrier regulates the entry of substances from the blood into the brain, helping to maintain the brain's microenvironment and protect it from potentially harmful substances.
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An ionic salt or salt crystal.
Capillaries
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peritubular capillaries
The glomerulus are a network of capillaries surrounding the renal tube. peritubular capillary beds
A network is formed by links
A network is formed by links
Lymphatic capillaries are dead-end vessels interspersed between the vascular capillaries. They lack tight junctions between endothelial cells and therefore are more permeable to proteins than are vascular capillaries.
peritubular capillaries
Lymph