And as we kept on working on this data, looking at small clusters of the body, these little pieces of tissue that were the trophoblasts coming off of the blastocyst, all of a sudden burrowing itself into the side of the uterus, saying, "" I'm here to stay. "" Having conversation and communications with the estrogens, the progesterones, saying, "" I'm here to stay, plant me, "" building this incredible trilinear fetus that becomes, within 44 days, something that you can recognize, and then at nine weeks is really kind of a little human being.