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The Blood-Testes Barrier is formed by tight junctions between neighbouring Sertoli cells. This barrier prevents leukocytes from entering the adluminal compartment of the seminipherous tubules and autoreacting to the haploid spermatids within it.
 
The Blood-Testes Barrier is formed by tight junctions between neighbouring Sertoli cells. This barrier prevents leukocytes from entering the adluminal compartment of the seminipherous tubules and autoreacting to the haploid spermatids within it.
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The '''spermatic cord''' runs from the abdomen caudally, through the '''inguinal canal'''.  The inguinal canal is formed by the '''deep and superficial inguinal rings'''.
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*Deep inguinal ring: Opening between the ''internal abdominal oblique'', ''rectus abdominis'', prepubic tendon and inguinal ligament.
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*Superficial inguinal ring: Opening in the ''external abdominal oblique''.
      
===Epididymis===
 
===Epididymis===
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