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) .
July's average temperature of 93.5 degrees is the highest of the year, and the month features an average high temperature of 105.9 and an average low of 81.0. The temperature has reached as high as 121 on the 28th in 1995. The lowest ever recorded was 63 on the 4th and 5th in 1912.he hot weather is not completely over as there usually are on the average 13 days with 100 or higher during the month. The average date of the last 100 degree temperature is the 27th. The lowest temperature ever recorded was 47 on the 20th and 21st in 1965.