[sima_yi]

The selenium versions may occur in trace amounts. The way selenium poisoning works is the sulfur in the body’s proteins (which contain methionine and cystine) gets replaced with selenium, and no longer function properly.

[Calvin Locke]

There's a tv movie, supposedly based on a true story, with husband
John Ritter killing a wife or three with selenium scraped off of old
radio components.

The last, played by Marg Helgenberger, came down with a fatal case
of chemical induced leukemia, iirc.