             

              

         

      ◇             

 2.5              

              

            

      ◇             

   1/6          

              

         

      ◇            

             

             

  18％          

             

 

      ◇             

             

           

      

      ◇            

      β      

            

               

 48％   

      ◇             

           

             

             

             



      ◇             

B12              

      B12      

    B12         

            

      ◇             

            

     

      ◇            

            

             

           89％ 

        63％     

             

              

     