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Chang and Eng Bunker (1811–1874)
By: Mudhaffar Bahjat
| Published: Jan 22, 2018
Chāng (Chang) and Ēn (Eng) Bunker were conjoined twins in the nineteenth century in the United States, the first pair of conjoined twins whose…
Conjoined twinsSiamese TwinsTwinsIdentical twinsTwins, Siamese
Categorization of Conservative, Semi-Conservative, and Dispersive DNA Replication Theories (1953–1956)
By: Victoria Hernandez
| Published: Oct 31, 2019
In 1956, Gunther Stent, a scientist at the University of California Berkeley in Berkeley, California, coined the terms conservative, semi-…
DNADNA ReplicationDNA HelicasesGenesHeredity
"Human Factor IX Transgenic Sheep Produced by Transfer of Nuclei from Transfected Fetal Fibroblasts" (1997), by Angelika E. Schnieke, et al.
By: Zane Bartlett
| Published: Aug 19, 2014
In the 1990s, researchers working at the Roslin Institute in Edinburgh, Scotland, performed cloning experiments in collaboration with PPL…
CloningChristmas FactorBlood coagulation factor IXRoslin InstituteWilmut, Ian
Stanley Paul Leibo (1937–2014)
By: Risa Aria Schnebly
| Published: Feb 05, 2021
Stanley Paul Leibo studied the cryopreservation of embryos in the US in the twentieth century. Cryopreservation is a method of preserving biological…
Low temperature engineeringCryonicsScience and civilizationEmbryo transplantationCryotherapy
“A Proposed Structure for the Nucleic Acids” (1953) by Linus Pauling and Robert Brainard Corey
By: Victoria Hernandez
| Published: Aug 26, 2019
In February 1953, Linus Pauling and Robert Brainard Corey, two scientists working at the California Institute of Technology in Pasadena, California,…
LiteratureDNAGeneticsX-ray crystallography--TechniqueCrystallography, X-Ray
"Comfortably, Safely, and Without Shame: Defining Menstrual Hygiene Management as a Public Health Issue" (2015), by Marni Sommer, Jennifer S. Hirsch, Constance Nathanson, and Richard G. Parker
By: Emily Santora
| Published: May 17, 2021
In July 2015, Marni Sommer and colleagues published “Comfortably, Safely, and Without Shame: Defining Menstrual Hygiene Management as a Public Health…
LiteratureMenstruationMenstruation--Social aspectsFeminine Hygiene ProductsSanitary napkins
“HeLa Cells 50 Years On: The Good, The Bad, and The Ugly” (2002), by John R. Masters
By: Rohini Nott
| Published: May 02, 2021
Published in 2002, prostate cancer researcher John R. Masters authored a review article HeLa Cells 50 Years On: The Good, The Bad, and The Ugly that…
LiteratureCell linesContinuous cell linesGerm CellsSurface contamination
Craig C. Mello (1960- )
By: May Catherine
| Published: Nov 30, 2011
Craig C. Mello is an American developmental biologist and Nobel Laureate, who helped discover RNA interference (RNAi). Along with his colleague…
PeopleRNA InterferenceBiography
Radioimmunoassay
By: Jennifer R. Craer
| Published: Oct 11, 2013
Radioimmunoassay (RIA) is a technique in which researchers use radioactive isotopes as traceable tags to quantify specific biochemical substances…
TechnologyImmunoassayRadioimmunoassayBiochemistryBinding sites (Biochemistry)
Francis Harry Compton Crick (1916-2004)
By: Amanda Andrei
| Published: Nov 01, 2013
Francis Harry Compton Crick, who co-discovered the structure of deoxyribonucleic acid (DNA) in 1953 in Cambridge, England, also developed The Central…
DNAChromosomesNucleotide sequenceNucleic AcidsMolecular Biology