Felix Anton Dohrn

<a href="/search?text=Felix%20Anton%20Dohrn" title="" class="lexicon-term">Felix Anton Dohrn</a> (1840-1901)

Conrad Hal Waddington (1905-1975)

<a href="/search?text=Conrad%20Hal%20Waddington" title="" class="lexicon-term">Conrad Hal Waddington</a>Conrad Hal Waddington was an embryologist and theoretical biologist. His early experimental work investigated aspects of embryonic induction and the properties of the organizer first identified by Hans Spemann and


<a href="/search?text=Regeneration" title="" class="lexicon-term">Regeneration</a>Regeneration is a fascinating phenomenon. The fact that many organisms have the capacity to regenerate lost parts and even remake complete copies of themselves is difficult to fathom; so difficult, in fact, that for a very long time people were reluctant to believe regeneration actually took place. It seemed unbelievable that some organisms could regrow lost limbs, organs, and other body parts. If only we could do the same! Unfortunately, our regenerative capacities are limited to hair, nails, and skin, while the liver and a few other tissues display more restricted regenerative abilities. What if we could grow back lost limbs, or damaged organs?

Franklin Paine Mall (1862-1917)

<a href="/search?text=Franklin%20Paine%20Mall" title="" class="lexicon-term">Franklin Paine Mall</a>Franklin Paine Mall was born into a farming family in Belle Plaine, Iowa, on 28 September 1862. While he attended a local academy, an influential teacher fueled Mall’s interest in science. From 1880–1883, he studied medicine at the University of Michigan, attaining his MD degree in 1883. William J. Mayo, who later became a famous surgeon and co-founder of the Mayo Clinic in Rochester, Minnesota, was a classmate of Mall’s. Throughout his studies at Michigan, he was influenced by Corydon L. Ford, a professor of anatomy, Victor C. Vaughn, a biochemist and bacteriologist, and Henry Sewall, a physiologist.

Hans Adolf Eduard Driesch (1867-1941)

Hans Adolf Eduard DrieschAlthough educated as a scientist who studied with both August Weismann and Ernst Heinrich Haeckel, Hans Adolf Eduard Driesch was first employed as a professor of philosophy and became a strong proponent of vitalism. Driesch was born on 28 October 1867, the only child of Josefine Raudenkolb and Paul Driesch. He grew up in a wealthy merchant family in Hamburg, Germany, where he was educated at the humanistic Gymnasium Gelehrtenschule des Johanneums that had been founded by a friend of Martin Luther. In 1886 he spent two summers studying with Weismann at the University of Freiburg and then entered the

Test-Tube Baby

Test-Tube BabyA test-tube baby is the product of a successful human reproduction that results from methods beyond sexual intercourse between a man and a woman and instead utilizes medical intervention that manipulates both the egg and sperm cells for successful fertilization. The term was originally used to refer to the babies born from the earliest applications of

The Marine Biological Laboratory, Woods Hole, Mass. 1935

1 black and white video; sound (musical accompaniment only); reformatted digital