Word: walls
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Dates: during 1970-1979
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...speaking nonsense is perfectly willing to say so." His partner Edwards, the father of five daughters, is no less accomplished in his own field, the physiology of fertilization, and just as dedicated. During early experiments at Cambridge, he often returned to the physiology department at night, scaled a wall, and slipped into his lab to see if fertilized eggs were still alive...
...fertilized egg continues its journey, dividing as it moves through the tube. Finally, after several days, it will have become a blastocyst, a hollow, ball-shaped cluster of fewer than 100 cells. By now, it will have reached the uterus. There the blastocyst embeds itself in the uterine wall, where it begins drawing nourishment from the mother and starts the miracle of differentiation: the rapid transformation of cells into tissue that soon becomes recognizable as heart, brain, muscle, kidneys and all the other components of a living, self-sufficient being...
...done is by picking up the egg, which is still no bigger than the dot at the end of this sentence, with a tiny hollow tube, or pipette, then inserting it through the cervix and into the uterus. If all goes well, it will implant itself in the uterine wall. At least a week must pass before the doctors know if the patient is indeed pregnant...
...locate the ovary, an optical system, called a laparoscope, is inserted through an incision in the abdominal wall. Under direct vision, a needle is then inserted into the ovary to draw out the eggs...
...After the woman receives further hormone treatment to prepare the uterine lining, the blastocyst is placed in the uterus, where it attaches to the wall and normal embryo development proceeds-as it would from a natural conception...