Document 6wZ8q3YmBbZzoDda9prJoDM1g

of th*se sric3-s. Itillr.d at various perio.!* ;ip to lli rort.'-u sSLer expo juts, lc5.3T-t 9-9 !r* s* tho an i:; tho jroap c.'icrv'icri at i>z *rr; of r.hs ZCw-'cont.h -TTpc^ur^ pfrn cd or those Li nio>:k!l= rhich rcn.-ci-V-d in live, dwst rooa for corn then 70 nont.hc* Fcurvesn moths after bust c urs ceased, the foci in four of the nix nr-tricir.^ dree. piyn `-cine sc, snail tr only with a- hand lens. they were t 15ibis fviiacti:.: in the tf-otrp kt0'^ '"or 27 r.ontha ari Vr>or. transferred to a normal (tterwch-er* v-vs quite eitilAr to t-ha reepense Lev the i?0-nonth !rcposurc icinais cent lor.od abrrco Roentver, snail foci -n*re .tlrarya visible on ^ross inspection cf sections at sJ-1. ^alnen pijs of tha 2?-<rcnth aer.tax bnb in no instance was there aTiceoce of srtervaion of the reaction. 67, Lffnsh Sode Iirrclraoent, Ra5.ctj.0n in the tracheobronchial lyapfc nodes was first risible at the third cor.th of *zroeirre, At the 6th wroth patches of oallv.Xgr connect ire r-i?*';* begin to appear in th srstallA &nrt by thn ll;th month Kost of the aode had been replaced by cellsilar corre'Tt.tTe tissue* This plchvvtv7 ntvich resesnled that in early silicoals, pfsmPieted to th end of this ospertaent. .Aojm anicils, is a. variant, enroll heery sheets of diffuse oo.oc7t* and l?.rgc roti.ve girot oflll* birt there n<rrar any necrosis or h7lin*? fozTfitLfn The spindle-Abicped new o?lls were yullsTLsh la re.lor frrej fin* p55^rtt jraTPil.*? th?.t tt.?iaed fr iron. "do fibrr- nr ajb&stoeisi bodies *w *etv. 65. Asbeetoals Holies, ilt.hov.5t1 *.-!> tosi s V>ii*t m*re seen tr sorly as one csrnth niter sxporor* began, they -rare rare and hard to find. At ^ conihr rort rrrrn Tisiblo. chiefly colled inside yitnt cells, arjd at 6 ornth* oary hodI#* were .free in cornnctire tissue, Thor became fairly abundant. * croeirr* projsreiSMr. although in sosm later fitvAraOjv tho e.Htmnbosta bodies cal7 noderately nuserous.