If the entire email fits in the subject, put it in the subject. If you think that's rude, it's not. If you insist that it's rude, put Thanks! in the body. If the email fits in the subject, it takes a click out of processing it, and raises the probability of a reply.
Saliva is a watery substance formed in the mouths of animals, secreted by the salivary glands. Human saliva comprises 98% water, plus electrolytes, mucus, white blood cells, epithelial cells, glycoproteins, enzymes, antimicrobial agents such as secretory IgA and lysozyme. The enzymes found in saliva are essential in beginning the process of digestion of dietary starches and fats. These enzymes also play a role in breaking down food particles entrapped within dental crevices, thus protecting teet
Saliva contains an amylase called salivary amylase, which is produced by the salivary glands in the mouth. Saliva is a slippery liquid that lubricates food so that it can smoothly pass through the food pipe. However, it also contains enzymes that start the digestion process. Salivary amylase starts breaking down starch in the mouth and continues to do so after the food is passed into the stomach and small intestine. Salivary amylase works best at a neutral pH, but can survive the stomach acid.