Biodistribution of 64Cu-CB-TE2A-G-ZHER2:342 and 64Cu-CB-TE2A-GEEE-ZHER2:342 was compared in BALB/C nu/nu mice bearing HER2-expressing SKOV-3 or HER2-negative Ramos lymphoma xenografts. Here, ERBB2 is linked to lymphoma.