Abominable Blood (S01E02)

What is that lovely, icky red blood, and why is it essential for us? How does it carry vital substances throughout our bodies? Bob the robot is on a mission to earn his first aid badge so he can attend the robot jamboree, but he has a strong aversion to blood. Just as Mark is about to perform a blood transfusion using canine blood, he is interrupted by blood specialist Charles Drew, who steps in just in time to prevent a potential disaster!