[Histonet] crumbly femurs

[Dana Marshall]

Hi everyone,
I am trying to section some mouse legs.  The bones were fixed/decalcified for one week then quick frozen in OCT and put at -20C where they have been for about 2 months.  Regardless of how thick I cut the section (5-20 microns), whether I cut free hand, use our cryojane or the old fashioned scotch tape type of tape transfer, there is little/no visible bone in the section.  Just OCT and an empty space where bone would be.  If I cut without tape I can see the bone crumble as I cut.  This seems to be a catastrophic failure of some sort and may be beyond any type of help at this point but if anyone has any ideas as to why this is happening I would be happy to hear from you.
Thanks,
Dana