Related Experiment Video

Updated: Aug 19, 2026

Investigating Mast Cell Secretory Granules; from Biosynthesis to Exocytosis
16:01

Investigating Mast Cell Secretory Granules; from Biosynthesis to Exocytosis

Published on: January 26, 2015

Lysosomes in Brenner's tumor simulating secretory argentaffin granules

M Waxman, J C Vuletin, L P Pertschuk

    Archives of Pathology & Laboratory Medicine
    |April 1, 1979
    PubMed

    More Related Videos

    Imaging FITC-dextran as a Reporter for Regulated Exocytosis04:50

    Imaging FITC-dextran as a Reporter for Regulated Exocytosis

    Published on: June 20, 2018

    Generation and Quantitative Characterization of Functional and Polarized Biliary Epithelial Cysts09:55

    Generation and Quantitative Characterization of Functional and Polarized Biliary Epithelial Cysts

    Published on: May 16, 2020

    Related Concept Videos

    Maturation of Endosomes01:28

    Maturation of Endosomes

    The early endosome containing internalized molecules matures through transformations in its location, morphology, intraluminal pH, and membrane protein composition. Together, these changes result in a more acidic late endosome that contains multiple intraluminal vesicles; therefore, the late endosome is also called a multivesicular body (MVB).
    Changes in location
    The maturing endosome moves along microtubules from the periphery of the cell towards the perinuclear region. This movement of the...
    Intralumenal Vesicles and Multivesicular Bodies01:38

    Intralumenal Vesicles and Multivesicular Bodies

    Intraluminal vesicles (ILVs) are small vesicles 50-80 nm in diameter formed during the maturation of early endosomes. A specialized endosome containing numerous ILVs is called a multivesicular body (MVB). ILVs contain internalized molecules such as antigens, nucleic acids, proteins, and metabolites. Some of these molecules are released from the MVBs inside exosomes and are transported to other cells. Other MVBs contain molecules that are retained in the ILVs and are later degraded within the...
    Overview of Secretory Vesicles01:33

    Overview of Secretory Vesicles

    Secretory vesicles, also known as dense core vesicles (DCVs), are membrane-bound vesicles that transport secretory proteins, such as hormones or neurotransmitters. Regulated secretory vesicles transport proteins from the trans-Golgi network to the exterior of the cell. Proteins present in regulated secretory vesicles are required to be rapidly exocytosed in large amounts upon a specific stimulus.
    Various proteins regulate the aggregation of molecules inside the secretory vesicles. Chromogranins...
    Autophagy01:27

    Autophagy

    Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
    An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
    Lysosomal Hydrolases01:22

    Lysosomal Hydrolases

    Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
    Insulin Secretory Vesicles01:05

    Insulin Secretory Vesicles

    Insulin secretory vesicles release insulin to stimulate blood glucose uptake and regulate carbohydrate metabolism. When the blood glucose levels increase, glucose enters the pancreatic β-islet cells through glucose transporters. Once inside, glucose is metabolized through glycolysis, the citric acid cycle, and the electron transport chain, producing ATP. This increase in ATP concentration closes ATP-sensitive potassium channels, leading to depolarization of the membrane and the opening of...