Key points are not available for this paper at this time.
A spectacular display of progress in knowledge of the mechanism of protein synthesis has taken place during the past decade, a logarithmic phase of growth which was preceded by an early inoculum of basic facts and an unspectacular lag phase. Just twenty years ago a summary of the extant state of information in this field presented at a Cold Spring Harbor Symposium (Zamecnik and Frantz, 1950) ended with the two line poem of Robert Frost—
Paul C. Zamecnik (Wed,) studied this question.