Cross section of tooth in alveolar bone - cat

Stain: Picric acid and hematoxylin. From left to right: alveolar bone covered with a woven type bone (bundle bone) tissue (stained darkly purple); yellow stained periodontal ligament with heavy collagen fibers (horizontal fibers) and blood vessels; bone-related part with Sharpey's fibers followed by a zone with blood vessels and tooth-related part with again Sharpey's fibers embedded in acellular cementum (dark purple rim) apposed to dentin (dentinocemental junction); note some cementoblasts; and dentin with fine striation of dentinal tubules which end in a fuzzy-like network of branching tubules just in front of a clear zone.