Board Thread:The Flash discussions/@comment-9346948-20160323000422/@comment-5139306-20160323202008

Wildesheer9876 wrote: Jon Jeong wrote: So how bout that blood type "PG-13" was it? I think it was C something I don't really know. Honestly I'm trying to understand how a whole new blood type can exist on an alternate earth. I would think the human body would be about the same on every earth.

Like in crisis on two earths when everyone's heart was on the right side.