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From: Production and Characterization of Monoclonal Antibodies Against Primo Vascular System of Rat
Light microscopic images of primo-vascular system. (A) Primo vessel (PV) and primo nodes (PN) on surface of small intestine. Free movable PVS is found as part of larger network on/between internal organs. Note transparent PV and PN compared with scarlet blood vessels (BV). (B) PV inside lymphatic vessel (LV) stained with Alcian blue. PV inside LV was clearly visible as a blue line 15 min after injection of 0.1% Alcian blue into lumbar lymph node. Scale bars indicate 200 mm.