Fig. 6.

Hybridocytochemistry for apo D mRNA on white (a, b) and grey matter (c–f). a White matter from an old subject; an intense expression of apo D can be observed. b White matter from an old subject; two oligodendrocytes expressing apo D are showed. c Cerebral cortex of an old subject; a great number of pyramidal neurons expressing apo D can be observed. d Pyramidal neuron expressing apo D in which the normal morphology of nucleus and nucleoli can be observed. e Granular neurons in cerebral cortex of an old subject expressing apo D. f Pericyte and astrocyte cells expressing apo D in an old subject