[Studies on the morphological structure of bone marrow under TEM, SEM and freeze cracking].
D000818:Animals; D001853:Bone Marrow / Q000648:ultrastructure*; D006412:Hematopoietic Stem Cells / Q000648:ultrastructure; D006801:Humans; D051379:Mice; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning; D008867:Microtomy