mouse lymphocytes incubated on cryostat-cut sections of lymphoid organs ( lymph nodes and peyer 's patches ) specifically adhere to the endothelium of high endothelial venules ( hev ) , the specialized blood vessels to which recirculating lymphocytes attach as they migrate from the blood into the parenchyma of the lymphoid organs .
C1179026
endothelium of
C0005847
blood vessels