| Abstract: | The development of the hair follicles started in the prescapular region of CRL 15 cm-fetuses as follicular plugs. At CRL 31 cm, they became cylindrical cell cords. In the CRL 45 cm-fetus two types of growing follicles, primary and secondary ones, could be differentiated, while the tertiary follicles were still follicular plugs. The follicles formed groups, and the primary follicles attained their complete structure at CRL 79 cm, while the secondary follicles at CRL 83 cm. The tertiary follicles were present in the full-term fetus. The latter follicles showed the phenomenon of pairing, where two, three, four or five follicles shared in a common hair canal and arose from the epidermis independently. |
