This is mostly caused by tires that are overinflated. When a tire is overinflated, the tire, in essence, bulges out more in the center. The tire then rides mostly on that bulge and that bulge wears faster than the sides of the tire. Keeping your tires properly inflated can help you to avoid center wear.
Lysozyme is abundant in a number of secretions, such as tears, saliva, human milk, and mucus. It is also present in cytoplasmic granules of the macrophages and the polymorphonuclear neutrophils (PMNs). Large amounts of lysozyme can be found in egg white.
While in the stomach, bolus is mixed with secretions from the stomach that are highly acidic. Once mixed, the bolus becomes chyme. Chyme is a mixture of incompletely digested food and stomach secretions. Some absorption does occur in the stomach, however, absorption mainly occurs in the small intestine.