hematopoiesis
Americannoun
Usage
What is hematopoiesis? Hematopoiesis is the formation of blood.Human blood cells are highly specialized, meaning they are formed to do specific jobs. Yet all blood cells come from the same place. Most of hematopoiesis begins in the bone marrow and blood-creating organs like the liver, where stem cells commit themselves to becoming a certain type of blood cell and are then transitioned into the bloodstream. Hematopoiesis begins when a stem cell receives a signal that a certain type of blood cell is needed. The cell will transition into a precursor cell for either red or white blood cells. Then the cells will begin moving through the body. Eventually, the cell will fully transition into a certain type of red or white cells, such as a granulocyte, erythrocyte, leukocyte, monocyte, or lymphocyte. Some of the matter and cytoplasm that the stem cells shed during their transition becomes blood platelets.Example: When your body begins losing blood, your kidneys send a signal to your cells to accelerate the hematopoiesis process for red blood cells.
Other Word Forms
- hematopoietic adjective
Etymology
Origin of hematopoiesis
From the New Latin word haematopoiēsis, dating back to 1850–55; hemato-, -poiesis
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Stanford researchers will be presenting data at the American Society of Hematology conference next month documenting high rates of clonal hematopoiesis in lymphoma patients before they receive CAR-T treatment.
From Science Magazine • Nov. 28, 2023
Immunologist Cameron McAlpine of the Icahn School of Medicine at Mount Sinai says the portion of the study linking clonal hematopoiesis to Alzheimer’s disease is “beautiful.”
From Science Magazine • Dec. 13, 2021
Clonal hematopoiesis is not cancer—people with the condition have a normal number of blood cells—but it can be a prelude to blood cancers such as leukemia and lymphoma.
From Science Magazine • Dec. 13, 2021
In addition, the spaces in some spongy bones contain red marrow, protected by the trabeculae, where hematopoiesis occurs.
From Textbooks • Jun. 19, 2013
Ineffective hematopoiesis results in insufficient numbers of RBCs and results in one of several forms of anemia.
From Textbooks • Jun. 19, 2013
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
