Document LgpXdygjKpeGJBqmYzw9G0yYd

For example, in rats roc siting asbestos flbori by intratracheal Injcotiou fibroslc of characteristic typo is visible ae early as one month after Injectionj for quartz dust the latent period lo two snaths or core. - Thus, tlio development of oodulor flbrools duo to Inhaled silica lego bo* hind tha deposition of duet to a gruater vxtoat thau^does the evolution of the diffuse roactlou to sabastos. This results la s dlfforouco la tho i dei;roo of progrusaion *hich follows toraiaatlon of exposure to dust. For example, on discontinuing exposure, the aodulee of slllooeis beaouo larger, to e Halted ertunt, for a considerable period cf .tli*, whereas the fi brosis of cebentosls inoreaeus for only a short time. Subsequently, the a asboetotlo flbrools coutractoj this process often distorts the adjacent pulmonary tissue and may result la a-progressive lnterfereaoe with cardio respiratory function. Asbestosls Codies. The peculiar structure known as tho asbestosls body or "ourlouo body" is a specific concomitant of esbostosis^*^*^. The typical body is a golden-yellow, beaded or hauatratod rod which may be either straight or curved (figs. 2 and 3). Often one or both ends arebulbous like a dumb-bell. The bodies vary considerably In length, and dimensions up to 2GU mloroce have been recorded. .. . It Is bellowed that asbestosls bodies are due to a deposit of protein and Iron pl^sonl of tissue origin upon the surfaao of lnhalod fibora 6'*^Cloyno, S.H.b Tho Formation of the Asbestosls Body in the Luug. Tubercle 12^ 398, 1931. .............. - - 7. Gloyne, S.R.i The Asbestosls Body. Lanoet, 1361, June 26, 1932.