Search results
Results from the WOW.Com Content Network
The haematopoietic system (spelled hematopoietic system in American English) is the system in the body involved in the creation of the cells of blood. [ 1 ] Structure
Diagram showing the development of different blood cells from haematopoietic stem cell to mature cells. Haematopoiesis (/ h ɪ ˌ m æ t ə p ɔɪ ˈ iː s ɪ s, ˌ h iː m ə t oʊ-, ˌ h ɛ m ə-/; [1] [2] from Ancient Greek αἷμα (haîma) 'blood' and ποιεῖν (poieîn) 'to make'; also hematopoiesis in American English, sometimes h(a)emopoiesis) is the formation of blood cellular ...
A blood cell (also called a hematopoietic cell, hemocyte, or hematocyte) is a cell produced through hematopoiesis and found mainly in the blood. Major types of blood cells include red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes).
Hematopoietic stem cells (HSCs) are the stem cells [1] that give rise to other blood cells.This process is called haematopoiesis. [2] In vertebrates, the first definitive HSCs arise from the ventral endothelial wall of the embryonic aorta within the (midgestational) aorta-gonad-mesonephros region, through a process known as endothelial-to-hematopoietic transition.
Emergency granulopoiesis is a fundamental hematopoietic mechanism activated during acute infections or inflammatory conditions, leading to a swift increase in granulocyte production, especially neutrophils, in the bone marrow. This process is essential for enhancing the innate immune system's capability to confront pathogen invasions effectively.
About 98.5% [22] of the oxygen in a sample of arterial blood in a healthy human breathing air at sea-level pressure is chemically combined with the hemoglobin. About 1.5% is physically dissolved in the other blood liquids and not connected to hemoglobin. The hemoglobin molecule is the primary transporter of oxygen in mammals and many other species.
Here is an example of how a barcode can come to be, for the all-important hematopoietic stem cell (HSC) as an example. [ citation needed ] HSCs are technically described as: lacking FMS-like tyrosine kinase 3 (Flt3) and lacking the markers specific to discrete lymphoid lineages (Lin) but expressing high levels of Sca1 and c-kit; HSC also ...
Myeloid tissue, in the bone marrow sense of the word myeloid (myelo-+ -oid), is tissue of bone marrow, of bone marrow cell lineage, or resembling bone marrow, and myelogenous tissue (myelo-+ -genous) is any tissue of, or arising from, bone marrow; in these senses the terms are usually used synonymously, as for example with chronic myeloid ...