The Head Crab may be a lowly creature in the Xen, but on earth they can be used to bombard resistance troops in the slums fighting the combine. When this happens, humans are converted into shambling zombies which go out and seek more to convert. Lets take a look at how these creatures interact with the brain!

Thank you for watching Roanoke Gaming and I hope you enjoy Half Life Head Crabs Zombie Neurology Explored | Lore of Half life 1, 2, and hopefully 3 Explained |

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