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Stages of spermatogenesis
The maturation of germ cells occurs in cell-association stages, each with a unique group of developing cells undergoing spermatogenesis.
![Human > <p>In humans, developing stages form irregularly-shaped patches that do not extend completely around the lumen. Thus, any given cross section will contain more than one stage. There are 6 stages in humans and they are not arranged sequentially along the tubule. </p>](https://digitalhistology.org/wp-content/uploads/2023/11/O.R.M.T.TP-7-1-ping.png)
Human >
In humans, developing stages form irregularly-shaped patches that do not extend completely around the lumen. Thus, any given cross section will contain more than one stage. There are 6 stages in humans and they are not arranged sequentially along the tubule.
![Non-human > <p>In rodents and non-human primates, the stages extend around the entire circumference of the tubule. Thus, individual cross sections contain a single cell-association stage and they are arranged sequentially along the tubule.</p>](https://digitalhistology.org/wp-content/uploads/2023/11/O.R.M.T.TP-7-2-ping.png)
Non-human >
In rodents and non-human primates, the stages extend around the entire circumference of the tubule. Thus, individual cross sections contain a single cell-association stage and they are arranged sequentially along the tubule.