And following the replication process, this will be the distribution, the arrangement of the parent strand and the daughter strand. So in each one of these two DNA molecules, one of these strands will be conserved, it will be that original parental strand and the other one will be the complementary newly synthesized daughter strand. And so we have this semiconservative process in which we have 50% of that original parental strand and 50% of that newly synthesized daughter strand. And these two DNA molecules are essentially identical, assuming that process was mitosis. Now, let's actually discuss what this experiment consisted and how it showed that the semiconservative replication process was correct. So what they did initially was they wanted to grow these special bacterial E. Coli cells that contain labeled DNA molecules.