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Gail Roberta Martin (1944– )
By: Lance Villarreal
| Published: Jul 31, 2019
In the twentieth and early twenty-first centuries, Gail Roberta Martin specialized in biochemistry and embryology, more specifically cellular…
EmbryosEmbryos--PhysiologyEmbryos--AnatomyBlastocystRetrovirus Infections
Caspar Friedrich Wolff (1734-1794)
By: Stephen Ruffenach
| Published: Jul 07, 2009
Caspar Friedrich Wolff is most famous for his 1759 doctoral dissertation, Theoria Generationis, in which he described embryonic development in both…
PeopleEpigenomicsBiographyEpigenetics
Sex Determination in Humans
By: Risa Aria Schnebly
| Published: Jul 16, 2021
In humans, sex determination is the process that determines the biological sex of an offspring and, as a result, the sexual characteristics that they…
Sex DeterminationGenetic sex determinationIntersex peopleDiscrimination against intersex peopleStevens, N. M. (Nettie Maria), 1861-1912
“An Extended Family with a Dominantly Inherited Speech Disorder” (1990), by Jane A. Hurst et al.
By: Kat Fowler
| Published: Mar 23, 2017
In 1990, researcher Jane Hurst and her colleagues published “An Extended Family With a Dominantly Inherited Speech Disorder,” in which they proposed…
LiteratureGeneticsGenetic and developmental diseases and disordersapraxiaLinguistics
Neurocristopathies
By: M. Elizabeth Barnes
| Published: Sep 19, 2014
Neurocristopathies are a class of pathologies in vertebrates, including humans, that result from abnormal expression, migration, differentiation, or…
CellsVertebratesdevelopmentCleft PalateAlbinism
Gastrulation in Gallus gallus (Domestic Chicken)
By: Corinne DeRuiter, Maria Doty
| Published: Jun 21, 2011
Gastrulation is an early stage in embryo development in which the blastula reorganizes into three germ layers: the ectoderm, the mesoderm, and the…
GastrulationChicks
Endoderm
By: Kate MacCord
| Published: Nov 17, 2013
Endoderm is one of the germ layers-- aggregates of cells that organize early during embryonic life and from which all organs and tissues develop.…
GastrulationEmbryosEmbryologyCellsTissues
Edmund Beecher Wilson (1856-1939)
By: Jane Maienschein
| Published: Aug 05, 2013
Edmund Beecher Wilson contributed to cell biology, the study of cells, in the US during the end of the nineteenth and the beginning of the twentieth…
EmbryologyCellsCytologyHeredityEvolution
De Formatione Ovi et Pulli (1621), by Girolamo Fabrici
By: Hilary Gilson
| Published: Sep 30, 2008
The embryological treatise De formatione ovi et pulli (On the Formation of the Egg and of the Chick) was written by anatomist and embryologist…
LiteraturePublicationsOvaAnatomy
Androgen Insensitivity Syndrome
By: Mary Drago
| Published: Jun 05, 2014
Androgen Insensitivity Syndrome (AIS) is a human disorder in which an individual's genetic sex (genotype) differs from that individual's observable…
AndrogensAndrogens--PathophysiologyIntersexualityIntersex peopleAndrogen-Insensitivity Syndrome