Each tonsil consists of a network of crypts (pits) that store cells used to fight infection. The tonsils contain B cells, a type of white blood cell that fights infections. They also produce antibodies against polio, streptococcal pneumonia, influenza, and numerous other infections.
Global Warming: What's Up With The Weather? is a DVD presentation of the television special by NOVA and Frontline dealing with questions raised about modern climate change.
weather. 1. 'weather'. If you are talking about the weather, you are saying, for example, that it is raining, cloudy, sunny, hot, or cold. The weather was good for the time of year.