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Genetic Linkage

Genetic Choreography of the Developing Human Embryo

Years ago, when I was teaching at a state university, I had the privilege to show real human embryos and fetuses to my genetics classes. An obstetrician back in the 1950s had saved them after patients had miscarried, with permission I was told, and donated the collection to the biology department.

My students were astonished at the forms that floated in size order in their test tubes and flasks, culminating in an 8-month fetus in a mayonnaise jar. I handled them with great care and respect. Read More 
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Stem Cell Ups and Downs

We expect too much of stem cells. The February 3 issue of Nature reveals both a setback and a stupendous achievement in the field.

An article in the news section takes induced pluripotent stem cells (iPS cells) down  Read More 
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