2o6 



LOCAL TLSSUE REACTIVITY 



aj)art (onsisted of three tyj)cs, namely, (liflu.sely distributed jjiinc- 

 tate hemorrhages, local cortical necrosis olten with punctate 

 hemorrhages and (hlluse (oitical necrosis accompanied by ex- 



M 



-r.^ 



V^J 







Fig. i6. Cross appearance of kidneys, sho\vin_s> focal and diffuse cortical necrosis. Pro- 

 cess does not involve medulla. (Gerber, 1936/;.) 



tensive hemorrhages. The lesions were limited to the cortex. 

 Kidneys which did not present gross morphological alterations 

 were usually negati\e on microscopic examination, except for 

 slight, cloudy swelling of the tubules and rare \enous glomerular 

 capillary thrombi. Kidneys showing diffusely distributed hemor- 

 rhages, pin-point to pin-head in size, presented on microscopic 

 examination, discrete interstitial hemorrhages in the cortex. The 

 intertubular and glomerular capillaries ^vere dilated and con- 

 gested. Not infrequently, extravasated erythrocytes ^vere present 

 in Bowman's space. Glomerular capillary thrombi were present in 



