The basic functional unit of the liver is the hepatic lobule, which consists of portal triads (hepatic arteriole, portal venule
, bile duct, lymphatics and branch of the vagal nerve) at the periphery that surround a central vein (Fig.
LCV is defined by the following five criteria proposed by the American College of Rheumatology (7): 1) age > 16 at disease onset, 2) history of taking a medication at onset that may have been a precipitating factor, 3) the presence of palpable purpura, 4) the presence of maculopapular rash, and 5) a biopsy demonstrating granulocytes around an arteriole or a venule
1998) Identification of podocalyxin-like protein as a high endothelial venule
ligand for L-selectin: parallels to CD34.
In this cryobiopsy specimen that has well-expanded airspaces, a low-power view shows a cellular infiltrate (A, arrow) that on high power is composed of only a few layers of lymphocytes surrounding a venule
Vascular parameters such as venule
dilation and larger retinal arteriolar calibre [9, 10], changes to the vasculature shapes and arteriolar branching angle, increased tortuosity [11-13], and Fractal Dimension (FD) of the retinal vascular network [14-16] are associated with DR.
Each appendage has 1 or 2 arterioles and a venule
on its vascular stalk (1).
Veins, beginning with the postcapillary venule
, collect blood from the microvascular bed and carry it away.
6) The edema induced by SP is primarily due to increased vascular permeability mediated through its action on NK-1 receptors situated on Post-capillary venule
Higher magnification identified a parasite (a hydatid protoscolex) within a hepatic venule
(Figures 4&5) and a diagnosis of hydatid disease (Echinococcus granulosus) was made.
It is probable that aquaporin-1 (AQ1), plentiful in high endothelium venules
at the arteriole-venule
junctions in lymph nodes, plays an important part (9,10).
Leukocyte adhesion was expressed as the number per 100 [micro]m length of venule
9) Due to the relative high pressure kon the arterial side of the circulation, this blood mixture contains a relatively greater proportion of blood from the arteriole side of the capillary bed than from the venule
side; and, thus, a "capillary-blood" sample obtained by skin puncture approximates closer to arterial blood than venous blood.