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Myeloid

 

 
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Myeloid
 
 
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The term myeloid suggests an origin in the bone marrow
Bone marrow

Bone marrow is the flexible biological tissue found in the hollow interior of bones. In adults, marrow in large bones produces new blood cells....
 or spinal cord
Spinal cord

The spinal cord is a long, thin, tubular bundle of neuron and glia that extends from the brain. The brain and spinal cord together make up the central nervous system....
, or a resemblance to the marrow or spinal cord.

In hematopoiesis, the term "myeloid cell" is used to describe any leukocyte that is not a lymphocyte
Lymphocyte

A lymphocyte is a type of white blood cell in the vertebrate immune system.By their appearance under the light microscope, there are two broad categories of lymphocytes, namely the large granular lymphocytes and the small lymphocytes....
. This terminology is frequently seen when classifying cancers, especially leukemia
Leukemia

Leukemia is a cancer of the blood or bone marrow and is characterized by an abnormal proliferation of blood Cell , usually white blood cells ....
.

It should not be confused with "myelin
Myelin

Myelin is an electrically-insulating dielectric material that forms a layer, the myelin sheath. Usually, myelin surrounds only the axon of a neuron....
", which is an insulating layer covering the axon
Axon

An axon or nerve fiber is a long, slender projectionof a nerve cell, or neuron, that conducts action potentialaway from the neuron's cell body or soma....
s of many neurons.








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The term myeloid suggests an origin in the bone marrow
Bone marrow

Bone marrow is the flexible biological tissue found in the hollow interior of bones. In adults, marrow in large bones produces new blood cells....
 or spinal cord
Spinal cord

The spinal cord is a long, thin, tubular bundle of neuron and glia that extends from the brain. The brain and spinal cord together make up the central nervous system....
, or a resemblance to the marrow or spinal cord.

In hematopoiesis, the term "myeloid cell" is used to describe any leukocyte that is not a lymphocyte
Lymphocyte

A lymphocyte is a type of white blood cell in the vertebrate immune system.By their appearance under the light microscope, there are two broad categories of lymphocytes, namely the large granular lymphocytes and the small lymphocytes....
. This terminology is frequently seen when classifying cancers, especially leukemia
Leukemia

Leukemia is a cancer of the blood or bone marrow and is characterized by an abnormal proliferation of blood Cell , usually white blood cells ....
.

It should not be confused with "myelin
Myelin

Myelin is an electrically-insulating dielectric material that forms a layer, the myelin sheath. Usually, myelin surrounds only the axon of a neuron....
", which is an insulating layer covering the axon
Axon

An axon or nerve fiber is a long, slender projectionof a nerve cell, or neuron, that conducts action potentialaway from the neuron's cell body or soma....
s of many neurons.

See also

  • pluripotential hemopoietic stem cell
    Pluripotential hemopoietic stem cell

    Hematopoietic stem cells are pluripotent stem cells that give rise to all the blood cell types including myeloid , and lymphoid lineages . The definition of hematopoietic stem cells has undergone considerable revision in the last two decades....


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