| Show S Presence PresenceS Is Necessary for S Growth of Cancer S SS I V WASHINGTON ASHINGTON Cancer Cancer tissue tissue S 5 sue contrary to generally held S- S S opinion requires the same sort 5 of protein nourishment for its growth as normal tissue does r Experiments showing this are reported by Drs Carl I S J J. J M. M Johnson and J. J W. W Thompson Thomp Thomp- I son of the United States public public public pub pub- lic health services service's national Institute Institute Institute In In- of Health in Public PublicS S S Health Reports Retorts S S The results of the studies in inS S which the growth of cancers in mice were checked by certain types of 1 diet cannot be applied in the treatS treatment treatment treat- treat S ment of cancer in man Dr S lin un emphasized New fundamental knowledge of the chemistry of cancer growth J however has been gained gamed Needs to Grow SJ- SJ Z l S 2 The growth of breast cancer in S mice can be checked Dr and associates found by ty feeding the theS animals a diet deficient though not S sJ entirely lacking in This S chemical is an amino acid one of I the essential building stones of all allS S S tissue proteins is also part of another chemical r i which is widely distributed in body tissues S S After the cancer growth in the S mice had been checked for about a n aS S month by the diet deficient in cys- cys i tine of I repeated injection d one caused a marked stimulation of the cancer growth This shows that is necessary for the Ute rapid growth of cancer tissue just justas justS S as S it is apparently necessary for forS growth of normal tissue S |
