The Apgar Score (1953-1958)

The Apgar Score (1953-1958) */ /*-->*/ Editor's note: Anna Guerrero created the above image for this article. You can find the full image and all relevant information here.

Somatic Cell Nuclear Transfer in Mammals (1938-2013)

Somatic Cell Nuclear Transfer in Mammals (1938-2013) */ /*-->*/ Editor's note: Madeleine Howell-Moroney created the above image for this article. You can find the full image and all relevant information here.

Radioimmunoassay

Radioimmunoassay */ /*-->*/ Editor's note: Madeleine Howell-Moroney created the above image for this article. You can find the full image and all relevant information here.

Germ Layers

Germ Layers

Johann Gregor Mendel (1822-1884)

Johann Gregor Mendel (1822-1884) */ /*-->*/ Editor's note: Sarah Walls created the above image for this article. You can find the full image and all relevant information here.

Mesenchyme

Mesenchyme */ /*-->*/ Editor's note: Katherine Koczwara created the above image for this article. You can find the full image and all relevant information here.

Meiosis in Humans

<a href="/search?text=Meiosis%20in%20Humans" title="" class="lexicon-term">Meiosis in Humans</a> */ /*-->*/ Editor's note: Katherine Koczwara created the above image for this article. You can find the full image and all relevant information here.

On the Generation of Animals, by Aristotle

On the Generation of Animals, by <a href="/search?text=Aristotle" title="" class="lexicon-term">Aristotle</a> */ /*-->*/ Editor's note: Anna Guerrero name created the above image for this article. You can find the full image and all relevant information here.

Induced Pluripotent Stem Cells

Induced Pluripotent Stem Cells */ /*-->*/ Editor's note: Madeleine Howell-Moroney created the above image for this article. You can find the full image and all relevant information here.