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Sources: https://sites.google.com/view/sources... One of the most important components of our immune system is the complement system. An army of millions of small bombs that together perform a complex defense dance to stop intruders in our body. Things Explained - Kurzgesagt is a science channel that explains complex topics from space research, physics, biology, politics, philosophy and technology in a simple and understandable way in animated form. We publish a new video in German every two weeks. Sometimes translations from our English-language channel, sometimes exclusive content for the German market. Since September 28, 2017, Things Explained - Kurzgesagt has been an offering from funk