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    | Step1 | 
  
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    |  | 
        
          | Strain
            ID: | DBA/2J |  
          | Body Weight: | 21 g |  
          |  |  
          | Procedures: |  
          | This is a dorsal view of a mouse's skull, in order to access the 
            brain you can cut along the coronal suture and sagittal suture then 
            pull off both sides of parietal bone and interparietal bone |  | 
    | Step2 | 
  
    |  | 
  
    |  | 
        
          | Strain
            ID: | DBA/2J |  
          | Body Weight: | 21 g |  
          |  |  
          | Procedures: |  
          | Now the skull is open and you can see the brain clearly, in order to 
            get the hippocampus you'd better keep the brain in the cranial 
            cavity so the brain will not move when you continue with the 
            following steps |  | 
    | Step3 | 
  
    |  | 
  
    |  | 
        
          | Strain
            ID: | DBA/2J |  
          | Body Weight: | 21g |  
          |  |  
          | Procedures: |  
          | In order to expose the hippocampus you need to remove the cerebral 
            cortex covering it. The first incision is at the end of the 
            hemisphere; the incision should be about 0.7mm deep for most adult 
            mouse that you might not hurt the hippocampus while to expose it. The 2nd incision is about 1.5-2mm in front of the first one, this 
            incision you need cut into the lateral ventricle, both of the 
            incisions go to the ventral of the brain and meet there. Now this 
            piece of cortex is free, pull it up, you will see the hippocampus 
            just like in this picture, also you can see the CSF in the opened 
            ventricle.
 
 |  | 
    | Step4 | 
  
    |  | 
  
    |  | 
        
          | Strain
            ID: | DBA/2J |  
          | Body Weight: | 21g |  
          |  |  
          | Procedures: |  
          | Keep working on the other side of the brain pull up both sides of 
            the cortex that covering the hippocampus along the ventricle. Now 
            you can see the dorsal part of the hippocampus. Separate the rest of 
            the hippocampus from the cortex covering it along the surface of the 
            hippocampus towards the ventral part of the hippocampus. |  | 
  
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