I'm not sure if somebody has mentioned this already, but TMNT and Daredevil share an origin story in the comics. The same truck that hit Daredevil and caused his blindness was carrying the ooze. TMNT came out after Daredevil and piggybacked on the crash in that, in their origin story, a can of ooze falls off of said truck as it is hitting Daredevil, rolls down into the sewer, and breaks on the turtles.