State why do individuals have diff pulse rate before exercise

The Fourteenth Amendment. It enforced a definition of citizenship on the states, thus overturning Dred Scott v. Sanford, and provided a mechanism for enforcing the Bill of Rights on states. Thus citizens could now sue their states in Federal court for abridging their constitutional rights.

In my own word cell technology can  lead to advances in the understanding of diseases mechanism and transmission because diseases is very bad