TABLE 1

Expression of LAT1 and LAT2 Confirmed in Mammalian Organs and Tumor Cell Types

Distribution	LAT1	LAT2
Organs	Heart, brain, placenta, lung, liver, skeletal muscle, kidney, pancreas, spleen, thymus, prostate, testis, ovary, small intestine, colon, peripheral leukocytes, bone marrow, fetal liver*	Brain, placenta, skeletal muscle, kidney, testis, small intestine
Tumor cell types	Teratocarcinoma, bladder carcinoma, lung small cell carcinoma, uterine cervical carcinoma, leukemia, lymphoma