| Abstract: | The loss of radioactive microspheres (15 microns in diameter) from the rat myocardium was investigated during chronic experiment. Microspheres were injected to donor rats, the hearts were removed 20-30 min later and the number of microspheres trapped in the heart was determined on gamma-counter. After that the hearts were transplanted into the abdominal cavity of recipient rats using microsurgery technique. 5-24 days later the recipients were killed, the transplanted hearts were removed and radioactivity was measured again. It was shown that not more than 10% of microspheres were lost from the myocardium over a 5-24-day period, with the value of microsphere loss independent of the time period. |
