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Fritz Levy, Ph.D., M.D.
JAMA. 1944;125(7):511. doi:10.1001/jama.1944.02850250051020.
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To the Editor:—  Dr. C. C. Little's article on the "Parental Influence on the Incidence of Cancer" (The Journal, May 13, p. 93) gives an excellent picture of the many important findings of the staff of the Roscoe B. Jackson Memorial Laboratory. The second chapter of his paper stimulates some discussion. I wholeheartedly agree with the author's statements "Cancer is cancer whether it is growing at the site of its origin or in tissue culture or in certain hosts in which it has been transplanted.... In any or all cases it is its progressive and continued power of cell division that distinguishes it from the rest of the body in which it originated." The following sentence, however, in the article written between the foregoing statements is only partly acceptable: "In any or all situations it is a part of the living and growing tissue of the individual in which it


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