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3:37
YouTube
Launchpad Learning
Pathogens - GCSE Biology
🦊 In this GCSE Biology video, we explain that pathogens, such as viruses, bacteria, protists, and fungi, are microorganisms that cause infectious diseases by reproducing rapidly inside a host and spreading to other organisms. Bacteria release toxins that damage tissues and make us feel ill, while viruses reproduce inside cells, causing cell ...
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