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Lymphoid Progenitor Cells

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Lymphoid Progenitor Cells

Postby IneptStudent » Thu Jan 05, 2006 11:28 pm

What exactly are these lymhoid progenitor cells? please post your possible answers as they are greatly appreciated.
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Postby MrMistery » Fri Jan 06, 2006 8:19 pm

lymphoid progenitor cells are the cells that create new white blood cells. you will find them in the bone marrow, lymph nodes and thymus
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Postby Dr.Stein » Sat Jan 07, 2006 8:44 am

Lymphoid progenitor cells are only found in primary lymphoid organs, i.e. bone marrow, bursa Fabricius, and thymus, provided as repertoire. The ones found in lymph nodes and other secondary lymphoid organs are cells that already undergoing education, selection, maturation, and differentiation to be capable to recognize antigens.
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Postby victor » Sat Jan 07, 2006 1:26 pm

Dr.Stein wrote: The ones found in lymph nodes and other secondary lymphoid organs are cells that already undergoing education, selection, maturation, and differentiation to be capable to recognize antigens.


come out as a naive cells..I like "naive" words..
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Postby MrMistery » Sat Jan 07, 2006 8:14 pm

bursa Fabricius.. What's that?
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Postby IneptStudent » Sun Jan 08, 2006 7:01 pm

Then what is the difference between these cells and 'null' cells? They both seem to be an early stage of bone marrow cells
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Postby Dr.Stein » Mon Jan 09, 2006 8:24 am

MrMistery wrote:bursa Fabricius.. What's that?

It is a dorsal diverticulum of bird's cloaca, the origin of B-cells in addition to that ones produced in bone marrow in where B-cells undergo proliferation, education, and differentiation.

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Hehe my picture :lol:
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Postby Dr.Stein » Mon Jan 09, 2006 8:36 am

IneptStudent wrote:Then what is the difference between these cells and 'null' cells? They both seem to be an early stage of bone marrow cells

Null cell or killer cell (K cell) is a class of lymphocytes characterized by a lack of surface markers specific for either T or B lymphocytes. There is another type of lymphocytes called natural killer cell (NK cell), this type also lacks of that surface marker (CD3). K cell and NK cell has a difference on how they kill their target cells, K cell kills with a mechanism called ADCC (antibody-dependent cytotoxicity), whereas NK cells is antibody-independent.
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Postby Dr.Stein » Mon Jan 09, 2006 8:44 am

victor wrote:
Dr.Stein wrote: The ones found in lymph nodes and other secondary lymphoid organs are cells that already undergoing education, selection, maturation, and differentiation to be capable to recognize antigens.


come out as a naive cells..I like "naive" words..

Naah, naive cells are the ones that have maturated in primary lymphoid organs but have not yet encountered antigen. The other word for this is "virgin" ;)
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Postby victor » Tue Jan 10, 2006 12:52 pm

I can guess that the picture above is your handmade picture..:lol:
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Postby MrMistery » Tue Jan 10, 2006 7:46 pm

No, that looks like a Vesalius :) :) :)
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Postby Dr.Stein » Wed Jan 11, 2006 4:56 am

Actually I got it from Google aww :P
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