Greg Tesdall says: 

>>Pathologist #3 doesn't like the fact that everything looks blue and thinks 
its the heparin.<<

>>Pathologists #1 and #2 prefer not having to look through the clot and like 
the filtered spicules.<<

Pathologist #3 is right. It's the heparin. It makes everything look blue. 
Pathologists #1 and #2 are also right. The marrow particles (spicules are 
bone) should be smeared before the surrounding blood has time to clot. 

Why don't you ask Pathologist #3 to show you how to prepare a bone marrow 
smear?

Bob Richmond
Samurai Pathologist #1
Knoxville TN