»	Hair and Nails
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	»	Nails
»	Wound Healing and Cytokines
»	Immunology
	»	Noncellular Component
		»	Toll-Like Receptors (TLR)
		»	Complement System
	»	Cells of The Immune System
		»	B Cells
		»	T Cells
		»	NK Cells
		»	Mononuclear Phagocytes
		»	Neutrophils
		»	Eosinophils
		»	Mast Cells
		»	Langerhans Cells
		»	Antibodies
		»	Major Histocompatibility Complex
»	References

Nails

Figure 1.6 Nail anatomy
Nail plate
- Consists of fully cornified cells (onychocytes); created by the nail matrix epithelium
- Proximal nail matrix synthesizes the dorsal aspect of nail plate; distal nail matrix creates the ventral surface of the nail plate
- Pink color of nail plate due to longitudinally situated subungual capillaries
- Nail plate has firm attachment to underlying nail bed
Cuticle or eponychium: prevents separation of nail plate and proximal nail fold
Nail matrix:
- Wedge-shaped area of specialized epithelium, divided into proximal and distal portion
- Lunula demarcates distal portion of nail matrix
- Melanocytes found in high concentration in nail matrix (mainly seen in the distal matrix)
Growth rate of fingernails 2–3 mm/month; toenails 1 mm/month
Complete replacement of nail requires 6 months for fingernail and 18 months for toenail