Srivastava and Petersen (1998) studied the lateral diffusive motion of labeled TFRC monomers in 3T3 fibroblasts as well as in HEp2 carcinoma cells by using FRAP experiments at 298 K. The resulting TFRC diffusion coefficients in 3T3 amounts to 0.68±2.1·10−8 cm2/s and in HEp2 0.29±1.3·10−8 cm2/s, respectively. This evidence concerns the gene TFRC and carcinoma.