The process of development involves mechanisms at the molecular, cellular and tissue levels to arrive at the complex anatomical and physiological structure of an organism. The study of development can shed light into the processes of many diseases and disorders that afflict people worldwide.
Red shows cell nuclei, most of which are dentate gyrus granule neurons. And white is GFAP immunostaining, which largely labels astrocytes but in this part of the brain also labels radial glia, the stem cells (or to be less controversial, “precursor” cells) of the hippocampus. Radial glia can be identified by the long process (almost like a dendrite) that they extend through the granule cell layer. 
taken from:  
Functional Neurogenesis
New neurons in the adult brain. How they work and what they’re good for.
and

A transgenic rat model for reducing adult neurogenesis.
Jason S. Snyder, Laura Grigereit, Michelle Brewer, Jim Pickel & Heather A. Cameron
(his images are absolutely amazing!)

Red shows cell nuclei, most of which are dentate gyrus granule neurons. And white is GFAP immunostaining, which largely labels astrocytes but in this part of the brain also labels radial glia, the stem cells (or to be less controversial, “precursor” cells) of the hippocampus. Radial glia can be identified by the long process (almost like a dendrite) that they extend through the granule cell layer. 

taken from:  

Functional Neurogenesis

New neurons in the adult brain. How they work and what they’re good for.
and

A transgenic rat model for reducing adult neurogenesis.

Jason S. Snyder, Laura Grigereit, Michelle Brewer, Jim Pickel & Heather A. Cameron

(his images are absolutely amazing!)

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