Fig. 3. IPCR profiles of irradiated mdx nu/nu TA muscles injected with 5x10⁵ isolated fibre MPCs (population B). (A) Lane 1 shows retrovirally infected MPCs at passage 5, and lanes 2-4 and 5-8 show profiles from individual muscles injected with cells at passage 5 and 9, respectively. The inner arrow (C) shows the position of the constant-sized product and outer arrows (1-4) indicate products common to the cell and many of the muscle preparations. (B) Right TA muscles of four mice (1-4) were damaged by notexin three weeks after MPC transplantation and muscles were analysed seven days later. L and r refer to the left and right TA muscles; l' and r' refer to the EDL muscle adjacent to the injected TA muscles. (C) Right TA muscles of five mice were damaged with notexin at three and six weeks after cell injection, and all muscles were examined seven days later. L and r refer to the left and right TA muscles; l' and r' refer to the EDL muscle adjacent to the injected TA muscles.