|  | 
        
        | 
                        
                                |  Ventricle wall - histology slide
 |  | 
                        
                                |  Ventricle wall - histology slide
 |  | 
                        
                                |  Ventricle wall - histology slide
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                                |  Ventricle wall - histology slide
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        | 
                        
                                |  Ventricle wall - histology slide
 |  | 
                        
                                |  Ventricle (labels) - histology slide
 |  | 
                        
                                |  Purkinje fibers - histology slide
 |  | 
                        
                                |  Purkinje fibers - histology slide
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        | 
                        
                                |  Purkinje fibers (labels) - histology slide
 |  | 
                        
                                |  Purkinje fibers (labels) - histology slide
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                                |  Papillary muscle - histology slide
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                                |  Papillary muscle - histology slide
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                |  |