animates sequence showing phagocytes attacking flu viruses at the back of a person's throat. - 吞噬細胞 個影片檔及 b 捲影像00:38死亡, 人體構造
viruses: what they are and how they work - part 25 of 31. the urgent need to find a cure for aids and cancer has pushed scientists to try to unlock the mysteries of viruses. viewers discover how viruses can invade, alter, and destroy healthy cells. they a - 吞噬細胞 個影片檔及 b 捲影像00:34
viruses: what they are and how they work - part 24 of 31. the urgent need to find a cure for aids and cancer has pushed scientists to try to unlock the mysteries of viruses. viewers discover how viruses can invade, alter, and destroy healthy cells. they a - 吞噬細胞 個影片檔及 b 捲影像00:31
biology: exploring the living world - part 15 of 18. examines the three lines of defense against infection - the skin and mucous membrane, the lymphatic system, and the circulatory system including liver and spleen. explains how the body becomes immune to - 吞噬細胞 個影片檔及 b 捲影像00:33細菌
biology: exploring the living world - part 11 of 18. examines the three lines of defense against infection - the skin and mucous membrane, the lymphatic system, and the circulatory system including liver and spleen. explains how the body becomes immune to - 吞噬細胞 個影片檔及 b 捲影像00:29
biology: exploring the living world - part 9 of 18. examines the three lines of defense against infection - the skin and mucous membrane, the lymphatic system, and the circulatory system including liver and spleen. explains how the body becomes immune to - 吞噬細胞 個影片檔及 b 捲影像00:39