Objective:To characterize the vasomotion pattern of lymphatic microcuculation in juvenile SHR rats at nascent stage of hypertension.Method:Spontaneous contraction cycles of mesenteric collecting lymphatics in3-week-old male spontaneously hypertensive rats(SHR group,n=11)and age-matched Wistar controls(Wistar group,n=11)were recorded with intravital video microscope.Lymphatic vasomotion videos were dynamically tracked and determined by automated Vastrack technique.Contractile parameters included relative amp...