Your skin should be toxic to ticks. Here’s why it’s not.

Your skin should be toxic to ticks. Here’s why it’s not.

A toxin from an ancient bacteria helps ticks survive and transmit Lyme disease to the humans they feed on, a new study finds.

Eons of competition between bacteria have led many to develop antibacterial substances to survive; and through a process known as “horizontal gene transfer,” some of these genes that carry instructions for creating these antibacterial substances hopped across species from bacteria to other types of organisms. 

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