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Exchange Transfusion for Jaundiced Newborns in the United States
By: Arianna Bradley
| Published: Mar 30, 2017
Exchange transfusion is the replacement of blood from newborn infants with elevated bilirubin level in their blood stream with donor blood containing…
TechnologyJaundice, NeonatalHyperbilirubinemia, NeonatalRh factorErythroblastosis Fetalis
Acid Dissolution of Fossil Dinosaur Eggs
By: Madison Paige
| Published: Feb 11, 2017
Acid dissolution is a technique of removing a fossil from the surrounding rock matrix in which it is encased by dissolving that matrix with acid.…
TechnologypaleontologyPaleontological excavationsVertebrates, FossilEggs, Fossil
The Southern Gastric-Brooding Frog
By: Christopher Rojas
| Published: Jan 26, 2015
The Southern Gastric-Brooding Frog (Rheobatrachus silus) was an aquatic frog that lived in south-east Australia. In 2002, the International Union…
Sexual behavior in animalsReproductive BehaviorExtinction (Biology)Extinct animalsCloning
Osborne Overton Heard (1890-1983)
By: Karen Wellner
| Published: Jun 28, 2010
Osborne O. Heard was a noted Carnegie embryological model maker for the Department of Embryology at The Carnegie Institute of Washington (CIW),…
PeopleCarnegie Institution of WashingtonBiographyModels
Conrad Hal Waddington (1905-1975)
By: Adam R. Navis
| Published: Nov 08, 2007
Conrad Hal Waddington was an embryologist and theoretical biologist. His early experimental work investigated aspects of embryonic induction and the…
EpigenomicsEpigeneticsBiography
The First Successful Cloning of a Gaur (2000), by Advanced Cell Technology - Image
By: Katherine Koczwara
| Published: Jun 11, 2019
The first successful cloning of a gaur in 2000 by Advanced Cell Technology involved the cells of two animals: an egg cell from a domestic cow and a
GaurCloningCattle--CloningExperimentsOrganisms
Laparoscopy
By: Olivia Conley
| Published: Jun 19, 2010
Laparoscopy, a subfield of endoscopy, is a minimally invasive surgical procedure used to examine and operate on the internal organs of the abdomen…
TechnologyLaparoscopyReproduction
Lap-Chee Tsui (1950-)
By: Kristina Winikates
| Published: Nov 10, 2011
Lap-Chee Tsui is a geneticist who discovered the cystic fibrosis (CF) gene, and his research team sequenced human chromosome 7. As the location of…
PeopleTsui, Lap-CheeCystic FibrosisReproductionBiography
Ziegler Wax Embryo Models
By: Karen Wellner
| Published: Jun 15, 2010
Three-dimensional anatomical models have long been essential to the learning of science and lend a sense of "control" to those practicing in the…
TechnologyReproductionModelsAnatomy
Roman Catholic Church Quickening
By: Katherine Brind'Amour
| Published: Nov 11, 2007
Although the concept of quickening was not developed initially by the Roman Catholic Church, much of their histories are intertwined. Quickening, the…
Human DevelopmentreligionFetusAbortionCatholicism