<Li> Interstitial oncotic pressure (π) </Li> <Li> Filtration coefficient (K) </Li> <Li> Reflection coefficient (σ) </Li> <P> Disorders of capillary formation as a developmental defect or acquired disorder are a feature in many common and serious disorders . Within a wide range of cellular factors and cytokines, issues with normal genetic expression and bioactivity of the vascular growth and permeability factor vascular endothelial growth factor (VEGF) appear to play a major role in many of the disorders . Cellular factors include reduced number and function of bone - marrow derived endothelial progenitor cells . and reduced ability of those cells to form blood vessels . </P>

Structures is used to control the flow of blood through a capillary bed