Our bodies are equipped to fight off all the harmful pathogens we breathe in every day. The lymphatic system has an outstanding way of protecting us. It remembers what pathogen our body has fought off before and it sends suitable killer cells to fight the threat out of our system.

Best of Earth Science: [ Ссылка ]
Best of BBC Earth: [ Ссылка ]

Secrets of the Human Body (2017)
The human body is the most sophisticated organism on earth. It's a scientific marvel and much about it remains a mystery. Secrets of the Human Body uses cutting-edge graphics to effectively peel back the skin and reveal the surprisingly beautiful biological processes that keep us alive.

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