Filter my results
Apoptosis, or programmed cell death, is a mechanism in embryonic development that occurs naturally in organisms. Apoptosis is a different process…
ApoptosisGenetic regulationCaenorhabditis elegansCellsGerm CellsLeonard Hayflick in the US during the early 1960s showed that normal populations of embryonic cells divide a finite number of times. He published his…
Cell DivisionBiology, ExperimentalCells, CulturedEmbryo Culture Techniquescell agingTelomeres are structures at the ends of DNA strands that get longer in the DNA of sperm cells as males age. That phenomenon is different for most…
TelomereAgingSpermSpermatozoaTelomeraseIn 2006, Kazutoshi Takahashi and Shinya Yamanaka reprogrammed mice fibroblast cells, which can produce only other fibroblast cells, to become…
Stem cells--ResearchStem CellsNobel PrizesEmbryologyDevelopmental BiologyExperiments conducted by Elizabeth Blackburn, Carol Greider, and Jack Szostak from 1982 to 1989 provided theories of how the ends of chromosomes,…
TelomereGreider, Carol W.Chromosome replicationTelomeraseDNATelomerase is an enzyme that regulates the lengths of telomeres in the cells of many organisms, and in humans it begins to function int the early…
TelomeraseTelomereDNAMolecular BiologySomatic embryogenesisTelomeres are sequences of DNA on the ends of chromosomes that protect chromosomes from sticking to each other or tangling, which could cause…
TelomeraseGreider, Carol W.Wistar Institute of Anatomy and BiologyAgingDNAThe Hayflick Limit is a concept that helps to explain the mechanisms behind cellular aging. The concept states that a normal human cell can only…
CellsCell populationsCell DeathApoptosisCell ProliferationIn the second half of the twentieth century, scientists learned how to clone organisms in some species of mammals. Scientists have applied somatic…
CloningCell nuclei--TransplantationSpemann, Hans, 1869-1941Genetic EngineeringIn the 1990s, Ian Wilmut, Jim McWhir, and Keith Campbell performed experiments while working at the Roslin Institute in Roslin, Scotland. Wilmut,…
CloningMolecular CloningClone CellsCampbell, Keith, 1954-2012Roslin Institute