Corrected entry: Several references are made to the patient having both male and female DNA. There is no such thing as "male" or "female" DNA. DNA is just a molecule. It's the chromosomes (specifically the X and Y chromosomes) formed from the DNA that determine if someone is male or female.
Garlonuss
28th Feb 2009
Correction: What they are referring to is that he has two distinct lines of cells: one with an XY pairing (thus, "male DNA") and one with an XX pairing ("female DNA"). This is a known but rare occurrence. Check out the Polite Dissent site for a doctor's review of the medicine in this episode and others.
Garlonuss ★