Hairpin shaped eosinophilic structure present in radicular cyst is:
Rushton bodies
Russell bodies
Both of the above
None of the above
Periapical Cyst 
The cyst lumen may be filled with fluid and cellular debris. On occasion, the lining epithelium may demonstrate linear or arch-shaped calcifications known as Rushton bodies 
Squamous epithelial cyst lining exhibiting numerous irregular and curvilinear Rushton bodies.