Related Experiment Video

Updated: Aug 17, 2026

The Establishment and Utilization of Patient Derived Xenograft Models of Central Nervous System Metastasis
06:52

The Establishment and Utilization of Patient Derived Xenograft Models of Central Nervous System Metastasis

Published on: May 7, 2021

[Euthanasia as a form of extermination applied by Germans in concentration camps during the World War II]

J Kucharski

    Archiwum Historii I Filozofii Medycyny
    |October 20, 2001
    PubMed

    More Related Videos

    Optrode Array for Simultaneous Optogenetic Modulation and Electrical Neural Recording06:36

    Optrode Array for Simultaneous Optogenetic Modulation and Electrical Neural Recording

    Published on: September 1, 2022

    A Standardized Pig to Macaque Heterotopic Heart Xenotransplantation Model06:52

    A Standardized Pig to Macaque Heterotopic Heart Xenotransplantation Model

    Published on: November 4, 2025

    Related Concept Videos

    Lethal Alleles02:41

    Lethal Alleles

    Agouti: A Lethal Allele
    Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
    Overview of Cell Death01:30

    Overview of Cell Death

    Cell death is an essential process where the body gets rid of old or damaged cells. Cell proliferation and death need to be balanced, as an imbalance between the two may lead to cancer or autoimmune diseases.
    Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the 20th century...
    Apoptosis01:30

    Apoptosis

    Apoptosis is a combination of two Greek words, 'apo' and 'ptosis,' meaning separation and falling off, respectively. Hippocrates used this word to describe gangrene, which was caused due to bandaging of fractured bones. Apoptosis was distinguished from necrosis in 1970 when John Kerr reported observations of morphological changes occurring during apoptosis. During one experiment, he observed that the disruption of blood supply to the liver tissue resulted in a size reduction of the tissue.
    Autophagic Cell Death01:18

    Autophagic Cell Death

    Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
    Autophagy and Apoptosis
    Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and pro-apoptotic...
    Anthelminthic Agents01:15

    Anthelminthic Agents

    Anthelmintic drugs differ significantly from antiparasitic therapies targeting protozoa, primarily due to differences in parasite biology. Whereas most protozoal treatments act on proliferating cells, anthelmintics are typically directed against mature, nonproliferative helminths. The therapeutic approach considers the helminth's reliance on neuromuscular coordination, glucose metabolism, and microtubular integrity for survival, reproduction, and localization within the host. Most anthelmintics...
    Cellular Injury V: Apoptosis and Autophagy01:22

    Cellular Injury V: Apoptosis and Autophagy

    Cells respond to damage and stress through highly coordinated processes that decide whether they survive or undergo controlled self-destruction. Two major pathways involved in this regulation are apoptosis, a type of programmed cell death, and autophagy, a survival mechanism that helps cells adapt to adverse conditions.ApoptosisApoptosis removes aged or injured cells to maintain tissue balance. During this process, the cell shrinks, chromatin condenses and fragments, and membrane-bound...