Zunaira salehabout 10 hours ago

A translucent zone

The dentinal tubules are seen in crosssection. Those in the centre of the picture have become obliterated by calcifi cation of their contents; only the original outline of the tubules remains visible and the zone appears translucent to transmitted light. On either side are patent tubules fi lled with stain. (Kindly lent by Dr GC Blake, and reproduced by courtesy of the Honorary Editors, Proceedings of the Royal Society of Medicine 1958; 51:678.)