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This probably explains how the bacteria could withstand the antibiotics without having specific resistance genes.

A Western military adviser to the Ukrainians said that details of a specific resistance there remained a closely held secret.

At the same time, I don’t exclude the pragmatism of issue specific resistance.

This activity gives the animal a very specific resistance, presumably because it is restricted to cells that sense AITC.

Furthermore, infected travellers from elsewhere have introduced the virus to the region many times, and Asian populations don’t have any specific resistance to yellow fever.