Image:  A professor reaches into the chest cavity of a cadaver in the Fisk University cadaver lab, pulls out a human heart and hands it to a student. The student feels the weight of the heart in her hands and turns it over for examination. Then, because this lab exists in virtual reality, the student enlarges the organ until it is 8 feet tall. The whole class steps inside the heart, where they see and touch the ventricle walls. This heart looks sicker than another heart they previously...


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