Related Experiment Video

Updated: Jul 10, 2026

Homing of Hematopoietic Cells to the Bone Marrow
10:40

Homing of Hematopoietic Cells to the Bone Marrow

Published on: March 18, 2009

Erythrocyte function and marrow regulation in hemoglobin Bethesda (beta-145 histidine)

J W Adamson, A Hayashi, G Stamatoyannopoulos

    The Journal of Clinical Investigation
    |November 1, 1972
    PubMed

    More Related Videos

    Measurement of Heme Synthesis Levels in Mammalian Cells09:43

    Measurement of Heme Synthesis Levels in Mammalian Cells

    Published on: July 9, 2015

    A Comprehensive Pipeline to Assess the Efficiency of Human Erythropoiesis In Vitro and Ex Vivo08:53

    A Comprehensive Pipeline to Assess the Efficiency of Human Erythropoiesis In Vitro and Ex Vivo

    Published on: January 10, 2025

    Related Concept Videos

    Erythropoiesis01:14

    Erythropoiesis

    Red blood cells  (RBCs) transport oxygen to all body tissues. These cells survive only for 120 days and then need to be replenished. Erythropoiesis is the process of RBC production. In healthy individuals, erythropoiesis ensures all tissues are amply supplied with oxygen. In addition, blood loss due to injury leads to a drop in the physiological oxygen level that will cause erythropoiesis. Any defect in erythropoiesis leads to several physiological disorders, including thalassemia, anemia, and...
    Overview of Hematopoiesis01:20

    Overview of Hematopoiesis

    Hematopoiesis, or blood cell production, is a vital biological process that begins early in embryonic development and continues throughout life. This process generates the various types of cells found in blood, including red blood cells, white blood cells, and platelets from hematopoietic stem cells (HSCs).
    Developmental Phases of Hematopoiesis
    Initially, HSCs are formed in the embryonic yolk sac, a critical site for early blood cell production. These stem cells subsequently migrate to other...
    Role of Hematopoietic Growth Factors01:28

    Role of Hematopoietic Growth Factors

    Hematopoietic growth factors are molecules that regulate the differentiation rate of hematopoietic stem cells (HSCs). Erythropoietin (EPO), primarily produced by the kidneys, plays a crucial role in erythrocyte production. When oxygen levels in the blood are low, EPO is released into the bloodstream, reaching the bone marrow, where it stimulates HSCs to differentiate and mature into erythrocytes, which are vital for oxygen transport.
    Thrombopoietin (TPO), mainly released by the liver,...
    Erythropoiesis01:14

    Erythropoiesis

    Red blood cells  (RBCs) transport oxygen to all body tissues. These cells survive only for 120 days and then need to be replenished. Erythropoiesis is the process of RBC production. In healthy individuals, erythropoiesis ensures all tissues are amply supplied with oxygen. In addition, blood loss due to injury leads to a drop in the physiological oxygen level that will cause erythropoiesis. Any defect in erythropoiesis leads to several physiological disorders, including thalassemia, anemia, and...
    Hemoglobin01:24

    Hemoglobin

    Hemoglobin is a globular protein made up of four subunits. Two of these subunits are alpha chains, and the other two are beta chains. Each subunit contains a molecule of heme, which has an iron atom and can bind to oxygen. When an oxygen molecule binds to one heme group, it changes the shape of hemoglobin, making it easier for the other heme groups to bind oxygen as well.
    When all four heme groups are bound to oxygen, the resulting molecule is called oxyhemoglobin. As a result, arterial blood...
    Oxygen Transport in the Blood01:27

    Oxygen Transport in the Blood

    Hemoglobin (Hb) is a crucial molecule in the human body, consisting of four polypeptide chains, each bound to an iron-containing heme group. This unique structure enables hemoglobin to bind to oxygen, with each molecule capable of combining with four molecules of oxygen, leading to rapid and reversible oxygen loading. When fully loaded with oxygen, it is called oxyhemoglobin, while hemoglobin that has released oxygen is called reduced hemoglobin or deoxyhemoglobin. As hemoglobin binds oxygen,...