Saliva is a lucid liquid that comes within the form of water and is secreted by salivary glands. The salivary glands in our body are present in the mouth and it generates about two to four pints of saliva

Lailakhal near Rani river in Jaintiapur upazila on the border of Sylhet, and is known to anyone as Nilanad. The color of these rivers is transparent in the mountains. Lalkhal's position at the bottom of