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Transmission electron micrographs of reference serovar Typhi Ty2 strain. (a–d) Normal Salmonella cells and (e–h) cadmium adapted Salmonella cells. Arrows highlights the differences observed. Inset- White arrows marked the electron dense regions in the enhanced micrographic image.

How heavy metals are helping spread drug resistance

Exposure to cadmium is making typhoid-causing bacteria, Salmonella, stronger and difficult-to-treat with conventional antibiotics, a new study has suggested. Researchers have identified exposure to cadmium...