TNNT1 and cancer: To investigate the versatility of TNNT1 as a marker of immortalized cells, we examined TNNT1 expression levels in various types of human cancer tissues and normal tissues using a TissueScan array spotted with cDNAs derived from 18 different cancer or normal tissues (adrenal glands, breasts, cervix, colon, endometrium, esophagus, kidneys, liver, lungs, lymphoid tissue, ovaries, pancreas, prostate, stomach, testes, thyroid gland, urinary bladder, and uterus).