Lymph in the lymph vessels eventually reaches a lymph node -- there are about 100 nodes scattered throughout the body. Lymph nodes filter the lymph and also contain large numbers of white blood cells (a big part of the immune system), which remove foreign cells and debris from the lymph.When you get certain infections, the lymph nodes swell with billions of white blood cells working to clear the foreign cells causing the infection.ymph nodes filter the lymph and also contain large numbers of white blood cells (a big part of the immune system), which remove foreign cells and debris from the lymph. When you get certain infections, the lymph nodes swell with billions of white blood cells working to clear the foreign cells causing the infection.
Yellowstone: Annual Weather Averages. July is the hottest month in Yellowstone with an average temperature of 24Â°C (75Â°F) and the coldest is January at -2Â°C (28Â°F) .ellowstone: Annual Weather Averages. July is the hottest month in Yellowstone with an average temperature of 24Â°C (75Â°F) and the coldest is January at -2Â°C (28Â°F) .
Yellowstone: Weather Forecast. The warmest day over the next 7 days in Yellowstone is forecast to be 14th April at 27Â°C (81Â°F) and the warmest night on 15th April at 17Â°C (63Â°F). The average temperature over the next 7 days is forecast to be 24Â°C (75Â°F) and there will be 3 days of sunshine . The average for April is 0Â°C (0Â°F) in Yellowstone.