Corrected entry: Lena finds out the mutations on herself through blood analysis. A red blood cell however does not have a nucleus and therefore does not contain DNA.
Corrected entry: When the women are rowing in the river the woman's paddles swap position and the cameraman is visible at the front of the boat. (00:40:00 - 00:41:00)
Correction: That isn't a cameraman seen in the front of the boat, it's the fifth member of the crew, Dr. Ventress. Ventress, Josie and Anya are in the first boat. Lena and Sheppard are in the second boat.
Correction: But white cells do, and they are an important component of any blood sample.