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Process of Eukaryotic Embryonic Development
By: Inbar Maayan
| Published: Oct 20, 2010
All sexually reproducing, multicellular diploid eukaryotes begin life as embryos. Understanding the stages of embryonic development is vital to…
EukaryotaEukaryotesOntogeny
The Process of Implantation of Embryos in Primates
By: Justin M. Wolter
| Published: Mar 21, 2013
Implantation is a process in which a developing embryo, moving as a blastocyst through a uterus, makes contact with the uterine wall and remains…
FetusPregnancyEmbryologyDevelopmental BiologyEmbryos
The Process of Gastrulation in Frog Embryos
By: Chinami Michaels
| Published: Dec 13, 2013
Illustration of the movement of the three hemispheres of cells, the animal cap (dark green) the marginal zone (lime green) and the ventral cap (yel
BlastulaGastrulationEctodermEndodermOrganisms
"Further Experiments on Artificial Parthenogenesis and the Nature of the Process of Fertilization" (1900), by Jacques Loeb
By: Steve Elliott
| Published: Jun 10, 2009
Jacques Loeb broadened and corrected his earlier claims concerning artificial parthenogenesis in sea urchins in a series of experiments in 1900. He…
ParthenogenesisExperimentsSea Urchins
"Experiments on Artificial Parthenogenesis in Annelids (Chaetopterus) and the Nature of the Process of Fertilization" (1901), by Jacques Loeb
By: Steve Elliott
| Published: Jun 10, 2009
Jacques Loeb showed that scientists could achieve artificial parthenogenesis with some types of annelid worm eggs through a series of experiments in…
ParthenogenesisExperimentsWorms
The Procedure for Semen Analysis as described in the World Health Organization's Laboratory Manual for the Examination and Processing of Human Semen (2021)
By: Logan Hunt
| Published: Jul 08, 2024
In 2021, the World Health Organization, or WHO, published the sixth edition of their Laboratory Manual for the Examination and Processing of Human…
Semen AnalysisWorld Health OrganizationWHOOrganization, World HealthSemen Quality
"On the Nature of the Process of Fertilization and the Artificial Production of Normal Larvae (Plutei) From the Unfertilized Eggs of the Sea Urchin" (1899), by Jacques Loeb
By: Steve Elliott
| Published: Jun 10, 2010
Jacques Loeb developed procedures to make embryos from unfertilized sea urchin eggs in 1899. Loeb called the procedures "artificial parthenogenesis…
ParthenogenesisExperimentsSea Urchins
Skinner v. Oklahoma (1942)
By: Rachel Gur-Arie
| Published: Aug 27, 2016
In 1942, the United States Supreme Court Case of Skinner v. Oklahoma ruled that states could not legally sterilize those inmates of prisons deemed…
LawCompulsory SterilizationSupreme Court DecisionsEugenicsInvoluntary Sterilization
Mills v. Board of Education of District of Columbia (1972)
By: Nathaniel Ross
| Published: Jun 14, 2022
In Mills v. Board of Education of District of Columbia (1972), the United States District Court for the District of Columbia held that students with…
LawSpecial EducationPeople with mental disabilitiesPeople with mental disabilities--Services forIntellectual Disability
Harris v. McRae (1980)
By: Reem Gerais
| Published: Jun 28, 2017
On 30 June 1980, in a five to four decision, the US Supreme Court ruled in the Case Harris v. McRae that the Hyde Amendment of 1976 did not violate…
LawContraceptionUnited States. Congress. House. Committee on Appropriations. Subcommittee on Departments of Labor and Health, Education, and Welfare, and Related Agencies AppropriationsMedicaidAbortion--Law and legislation--United States