Immunofluorescence analysis was performed in tissue sections using antibodies against CD31, podoplanin (to label lymphatic vessels), p32 (the target molecule of one of the tumor-homing peptides used), and T7 phage (associated to one of the tumor-homing peptides used), which were revealed with Alexa® 594-conjugated secondary antibodies. The gene discussed is PECAM1; the disease is neoplasm.