treatment  culture_day           cell_count  
High_C     Day_4                 115000      
High_C     Day_4_post_dilution   25000       
High_C     Day_5                 48250       
High_C     Day_5_post_dilution   25000       
High_C     Day_6                 66125       
High_C     Day_6_post_dilution   25000       
High_C     Day_7                 80667       
High_C     Day_7_post_dilution   25000       
High_C     Day_8                 72625       
High_C     Day_8_post_dilution   25000       
High_C     Day_9                 75250       
High_C     Day_9_post_dilution   25000