Which scientific product recall in the 1970s led to sweeping changes in laboratory safety after multiple researchers developed liver cancer from exposure to its residues?

In the scientific industry, product recalls can have profound implications for research, safety, and public health. One particularly notable recall in laboratory equipment history changed safety protocols worldwide. Test your knowledge about this significant scientific product recall that reshaped laboratory safety standards and prompted regulatory changes across the globe.

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PCB-containing microscope immersion oil
Mercury thermometers with defective seals
Asbestos-lined Bunsen burner mats
Formaldehyde-based specimen preservatives