normal mature nucleated erythrocytes. (fwd)

[Jeffrey Martz <martz@holly.ColoState.EDU>]

     I received this message yesterday.  It has at least periferal
relevancy towards dinosaurs, as it involves differences in red blood cells
(nucleated vs. anucleate) in reptiles, birds and mammals.  If you can shed
some light on the issue, please respond to Liia directly
(lhocking@oze.mail.com.au) unless you think you can extend this pretense
further.

LN Jeff

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Dear Jeffrey,
I am a student at the University of Technology, Sydney (UTS).

I am currently undertaking a science degree and I am studing haematology. 
I have been given an assignment to do on the advantages and disadvantages
of mature nucleated erythrocytes verses the advantages/disadvantages of
anucleated erythrocytes for animals.

I have become aware that mammals do have immature nucleated reds in
circulation, and may also show nucleated reds in response to trauma.  I
understand that bird, reptiles and other classes of animals have nucleated
erythrocytes which do not extrude their nuclei.  

I have been unable to find any advantages of normal erythrocytes retaining
their nucleus and I was hoping you could email me any information you have
on the topic.

Your time is very much appreciated,
Yours sincerely,
Liia Hocking

lhocking@ozemail.com.au