Perfusion
Perfusion is the passage of fluid through the circulatory system or lymphatic system to an organ or a tissue , usually referring to the delivery of blood to a capillary bed in tissue . 
<triplet> lymphatic system <subj> circulatory system <obj> part of <triplet> organ <subj> tissue <obj> has part <triplet> tissue <subj> organ <obj> part of <triplet> blood <subj> circulatory system <obj> part of