Tuesday, May 12, 2009

Memory T cells reside in bone marrow

When memory T cells form, where do they "hang out" until needed at a later time?  Scientists have debated this for some time.

Recent evidence recently published in the journal Immunity suggests an answer . . .

memory T cells prefer to reside in the bone marrow

Until now, most immunologists believed that these cells circulate in the bloodstream.  So this is somewhat of a game-changer.  To me, this makes a lot more sense.  It seems that tucking memory cells away in the bone marrow conserves them more efficiently than free circulation would.

Here is a great article summarizing the discovery and its importance:
Home of immune memory found
Edyta Zielinska
The Scientist (NewsBlog) 7th May 2009

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