founc that ;turain: 1 o.6)) fouvendr, teeter um Salmonella typhimurium oripisa.! 6 Ste Teun Musas nfeetions prow on synthetic meaié eonts cs. 0. y Cob oom: chi. se, and without vitamins or growth fiotors. Attar ltre voslet «ecisticn at about 2650A or KX radiation with wt: fhe or : jtrcent organisms surviving are plate cate tte uo ak 1 --a ® ali bacteria surviving uncnanred to prea more impertont ome s]atec avhir Toes ute ; : altered strocurs » Vitamins, or tt. media. Thess nee .o ot mgt rr. cs ni. ee: ‘ hoot alae ons of edditicnar have lost certai constant jus’ redone meat Cee woot TE yt 78 . at Soa *® . ou. agar centeaining vere! over and the hase we the resudts in the rrowth 2 ore fone cr testing to ole rog.ncl strains. These Was md rc tic amino ecius, morta gut ws et are present in the worl yee CLO. vpeguy.rements remain ort Se yd etc [| pobably determined by mene mitaticns jut os bo oc cpr orem. o . . xere, however, tne mutated cell: whit oo. ‘ rcd' cg) 6k fon e appear to have lost a particuler enzy » Ses blo whe parent strain synthesized or - itn ot . het, trhoan ev lutironary scheme end a mec : pues uy Ludies of these and otter r Anplied . . Dt Pion y: Do opea. © tiephyslcs was we ai te so Mo th ofrom the University ro "or po roe ine Cniversits The prc yr: assisted byv of Minnesota une of Rochester. 17 aerree Sy bee ur: curriculum iro. the proerom of eo, tie " te ~ “oP m : Senmitt, as barharm a general So the FR. eserleed 4 eiseus scien, acti. ‘ ou specific emerceues po intc Se Ls | vt mo , : : wehod.ns te fact . set up will cutumatically Sofi oment of aarowrermous mote ries MGoOur wealth ef the ARO ur Im Cet an oon: cat bean . ' Sion of Fho.ccp wi. ¢ hac apres. t,o Effectg om. ub ae Coerlin Ucile ‘ ' : . 4 . . Lo : . Las yo. met Co : ’ the Denertments «of Joop the responeatility ater ioctopes are es ak aren, the Livia - ELTON et cet et dy 7 Cour ld, elbavicn hewcoat