Filter my results
Search
Displaying 471 - 480 of 513
Ian Hector Frazer (1953– )
By: Alexis Darby
| Published: Sep 02, 2020
Ian Hector Frazer studied the human immune system and vaccines in Brisbane, Australia, and helped invent and patent the scientific process and…
PeopleHIV infectionsHIV-positive personsHIV (Viruses)Vaccines industry
Ericsson Method of Sperm Separation
By: Alysse Blight
| Published: Sep 20, 2019
In 1973, Ronald Ericsson developed the Ericsson method, which is a technique used to separate human male sperm cells by their genetic material.…
TechnologySex ChromosomesGonosomesSpermSpermatozoa
Clinical Tests of Estrogen Injections on Women with Abnormal Menstrual Cycles During the Early 1920s by Jean Paul Pratt and Edgar Allen
By: Brendan Van Iten
| Published: Apr 06, 2017
In the early twentieth century US, Jean Paul Pratt and Edgar Allen conducted clinical experiments on women who had abnormal menstrual cycles. During…
EstrogenEndocrinologyDoisy, Edward Adelbert, 1893-1986MenstruationUterus
Karl Landsteiner (1868-1943)
By: Corey Harbison
| Published: Feb 17, 2017
Karl Landsteiner studied blood types in Europe and in the United States in the late nineteenth and early twentieth centuries. Landsteiner won the…
Rh factorRhesus MonkeyBlood GroupsBlood CellsBlood Transfusions
Virginia Apgar (1909–1974)
By: Carolina J. Abboud
| Published: Feb 16, 2017
Virginia Apgar worked as an obstetrical anesthesiologist, administering drugs that reduce women’s pain during childbirth, in the US in the mid-…
Apgar, Virginia, 1909-1974Apgar ScorePregnancyObstetricsChildbirth
Leonard Hayflick (1928- )
By: Zane Bartlett
| Published: Jul 20, 2014
Leonard Hayflick studied the processes by which cells age during the twentieth and twenty-first centuries in the United States. In 1961 at the Wistar…
PeopleCellsCell populationsCell DeathApoptosis
Environment and Birth Defects (1973), by James G. Wilson
By: S. Alexandra Aston
| Published: Jun 21, 2014
Environment and Birth Defects by James Graves Wilson in the US was published in 1973. The book summarized information on the causes of malformations…
LiteratureBirth DefectsAbnormalities, HumanTeratogensTeratology
Ectoderm
By: Kate MacCord
| Published: Dec 02, 2013
Ectoderm is one of three germ layers--groups of cells that coalesce early during the embryonic life of all animals except maybe sponges, and from…
EmbryosEmbryologyGastrulationCellsTissues
The Role of the Notch Signaling Pathway in Myogenesis
By: Justin M. Wolter
| Published: Jul 26, 2013
Among other functions, the Notch signaling pathway forestalls the process of myogenesis in animals. The Notch signaling pathway is a pathway in…
MyogenesisNotch genesNotch ProteinsMusclesMyoblasts
Peter Mazur (1928–2015)
By: Risa Aria Schnebly
| Published: Oct 13, 2020
Peter Mazur was a researcher in the US who developed new ways of preserving biological material by freezing it, a process called cryopreservation. If…
Religion and science--HistoryMolecular weightsCryobiologyFreezingFrozen liquids