cortices. 1  1a (1) : the outer or superficial part of an organ or bodily structure (such as the kidney, adrenal gland, or cerebellum or a bone); especially : cerebral cortex (2) : the proteinaceous usually pigmented layer of a hair below the cuticleb : the outer part of some organisms (such as paramecia)
If a toenail has completely fallen off, it can take up to 18 months for it to grow back. A toenail can take longer to grow back if the nail bed has permanent damage. In some cases, old nails do not completely fall off, and they act as a protective...
1 In most cases, they will grow back though. If you don't see any sign of a healthy nail growing after six months, see your doctor. 2  Soak your feet in mouthwash for 2 months 30 minutes a day.  Tincture of iodine dabbed around the edges of the nail two to three times a day can remove the fungus.