the anteromediodorsal region of the thalamus in echidnas consists chiefly of two cytoarchitecturally different regions : the medial , 'polymorphic ' part contains relatively small , densely packed , multiform perikarya , whereas the lateral , 'monomorphic ' part is characterised by larger , sparse neurons with little cytoplasm and round , large , empty-looking nuclei in which the nucleolus is clearly seen .
C0007610
nuclei
C0007609
nucleolus