Typically, engineered wood products are made from the same hardwoods and softwoods used to manufacture lumber. Sawmill scraps and other wood waste can be used for engineered wood composed of wood particles or fibers, but whole logs are usually used for veneers, such as plywood, MDF or particle board.
Mucus is a slippery secretion of the lining of various membranes in the body (mucous membranes). It is a viscous colloid containing antiseptic enzymes (such as lysozyme) and immunoglobulins. Mucus is produced by goblet cells in the mucous membranes that cover the surfaces of the membranes.
If you feel something in back throat and can't expel it, phlegm might come from mucus from upper sinus or from back throat. If it's clear, it's not infected. Read More. My first breath when I wake in the morning is almost always followed by coughing up a large amount of phlegm and saliva.f you feel something in back throat and can't expel it, phlegm might come from mucus from upper sinus or from back throat. If it's clear, it's not infected. Read More. My first breath when I wake in the morning is almost always followed by coughing up a large amount of phlegm and saliva.