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Isotretinoin is a molecule and a byproduct (metabolite) of vitamin A, and in greater than normal amounts in pregnant women, it can cause fetal…
Teratogenic agentsVitamin AIsotretinoinAbnormalities, HumanTeratogensThe California Stem Cell Research and Cures Act, also called Proposition 71, was a ballot initiative proposed by California voters in 2004 to…
LawStem cells--Research--Religious aspects--ChristianityStem cells--Research--Moral and ethical aspectsEmbryonic stem cells--Research--Law and legislationEmbryo ResearchDizhou Tong, also called Ti Chou Tung, studied marine animals and helped introduce and organize experimental embryology in China during the twentieth…
Marine BiologyCell nuclei--TransplantationEmbryology, ExperimentalDevelopmental BiologyEmbryosMesoderm is one of the three germ layers, groups of cells that interact early during the embryonic life of animals and from which organs and tissues…
MesodermGastrulationCell differentiationCellsTissuesMesenchyme is a type of animal tissue comprised of loose cells embedded in a mesh of proteins and fluid, called the extracellular matrix. The loose,…
MesenchymeGastrulationStem CellsMesenchymal Stem CellsEmbryologyIn 1972, Peter Mazur, Stanley Leibo, and Ernest Chu published, “A Two-Factor Hypothesis of Freezing Injury: Evidence from Chinese Hamster Tissue-…
LiteratureCryonicsCryosurgeryMedicine--History--20th centuryOsmosisHenrietta Lacks, born Loretta Pleasant, had terminal cervical cancer in 1951, and was diagnosed at The Johns Hopkins University in Baltimore,…
PeopleAfrican American History MonthWomen in medicine--HistoryMedicine--United States--HistorybioethicsIan 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 industryRoy John Britten studied DNA sequences in the US in the second half of the twentieth century, and he helped discover repetitive elements in DNA…
DNAGenomesCalifornia Institute of TechnologyGenetic regulationMiceEthical Issues in Human Stem Cell Research: Executive Summary was published in September 1999 by The US National Bioethics Advisory Commission in…
LiteraturebioethicsStem cells--ResearchEmbryonic Stem CellsStem Cells