I have no clue, nor any record of how and why I ended up with a couple of blocks of human liver (most notably taken while i worked at childrens hospital) no way to trace the origina at all.  It is kind of interesting, this sample had lots of glycogen, also very dense mitochondria (might have preserved in a different laboratory — actually definitely by someone else since I never did any tissue exams on human tissue). The desmosome (which is not quite a double-mitochondrial tether (only one clearly tethered but the mitochondria in the adjacent cell is obviously tethered just down (or up) in the same block. This desmosomal mitochodnria tether is, like many, just adjacent to the bile canaliculus.