Creationists get all a-twitter about such claims and pass them around as gospel (cough), but they're dishonestly overblown.
"Fresh dinosaur bones" have not been found. Period. What has been found is portions of bone which have not been entirely replaced by infiltrating minerals, and which contain some of the original bone mineralization (bone, itself, is a mineral substance, and quite hardy). A fossil wherein some of the material is original is hardly a "fresh" bone.
Likewise, "blood cells" have not been found. Period. What has been found is circular cavities in fossils which represent a "cast" of the now long-gone blood cells, and in these cavities are rarely found heme fragments (heme is an iron compound which is a component of blood cells -- and again, this natural mineral substance is quite hardy), and what appears to be fragmentary protein residue (although even that is under dispute and may be latter contamination).
So stop lying in order to falsely boost your claims, please.