LBJ: The Early Years An offer of the Vice Presidency by John Kennedy is at first rejected by Johnson because of the advice of Sam Rayburn. The next day, Rayburn tells Johnson that he changed his mind, and LBJ accepts the offer, despite Robert Kennedy's attempt at squashing the idea. After JFK is elected in 1960, Johnson soon regrets his decision, and he is made to fill the most benign of roles while the President and his brother shut him out of meetings. This position changes drastically when John Kennedy is shot in Dallas in 1963, and Lyndon Johnson becomes the new President of
Referred pain modality, intensity, and timing of painful stimuli can be controlled with much more precision. Within this setting there are two main ways that referred pain is studied. In recent years several different chemicals have been used to induce referred pain including bradykinin, substance P, capsaicin, and serotonin. However, before any of these substances became widespread in their use a solution of hypertonic saline was used instead. Through various experiments it was determined that there were multiple factors that correlated with saline administration such as infusion rate, saline concentration, pressure, and amount of saline used. The mechanism by which the saline