Histology of Periodontal Ligament Fibers 

Used with permission of Elsevier Health Sciences, from Essentials of Oral Histology and Embryology: A Clinical Approach, Chiego, Daniel J. Jr., Chiego, Daniel J., 5th edition, 2018; permission conveyed through Copyright Clearance Center, Inc.
Reference:
Chapter 11
Cheigo, D. J. Jr. (2018). Essentials of oral histology and embryology. A clinical approach. (5th ed.). Elsevier