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Nail
2013-03-05 14:40:49

Nails are found on the fingers and toes alike. Formation and Orientation Nails are made of the protein keratin, much like hair as they are related, which is tough and strong and able to protect the ends of the fingers they cover. The nail plate, nail matrix, the nail sinus and the nail bed all make up the nail. The matrix is broken up into two sections; the nonvisible layer is simply referred to as the matrix while the visible part is called the lunula. The matrix is the tissue...

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Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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