ABSTRACT
1. Fibrinolysin and DNAase can effectively debride the necrotic tissue in artificially produced rabbit corneal ulcers without injuring the non-necrotic, viable portion of the cornea2. By comparing the treated and untreated bacterial and chemical corneal ulcers in rabbits, there was noted generally less inflammatory reaction and a faster and better healing in those where enzymatic debridement were done3. The basis for the clinical use of enzymatic debridement of corneal ulcers by fibrinolysin and DNAase has been amply demonstrated. (Summary and conclusions)
ABSTRACT
The preservation of fossil human soft tooth tissue from extinct populations which inhabited the northeast of Argentina (fourteenth and fifteenth centuries) is described. Studies were performed using both Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). The preservation of the surface structure in Tomes fibrils and in odontoblastic processes was determined by SEM; whereas by TEM we could observe the dentin ducts occupied by acellular material, being the inner structure of the odontoblastic processes poorly preserved. It is suggested that such preservation is due to an "instantaneous phosphatization" occurring immediately after death as a result of the presence of calcium phosphate deposits