FLVCR1 and infection: Infection of FeLV in the myocardium, thymus, mesentery, liver, kidney, and lung has been reported in cats47,48, consistent with our observation that Flvcr1, Slc20a1, and Slc20a2 were highly expressed in stromal cells and distal convoluted tubule cells of the kidney, epicardial cells of the heart, and ciliated cells of the lung.