Medicine.

Shi Lang has been sitting in front of a holo-computer with his fingers flying all over the keyboard as he extracted information from the four people. He has been cross-examining every single detail they uttered. He had the skills to heck in and initiate a conversation but he was not proficient enough to check the conversation history of the people. 

The communicators were programmed in such a way that every single operational code had a separate set of firewalls protecting it. Shi Lang was exhausting himself just to keep the hole open while he was conversing. After an hour, he sighed and let go of the keyboard. He said, "Ma'am, we are done here. The conversation is enough to show that the doctor has the ability to produce other living organisms by manipulating his body, and this guy can use this ability for both creation and destruction." 

Gamma raised her eyebrow and asked, "What do you mean?"