. Lab Data Check your count. Day -X P. caudatum grown alone (cells/mL) Population density P. aurelia grown alone (cells/mL) P. caudatum grown in mixed culture (cells/mL) P. aurelia grown in mixed culture (cells/mL) 0 2 2 2 2 2 8 10 4 6 8 10 12 14 16 cells/0.5 mL x 2 = cells/mL