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The human immune system is remarkably good at distinguishing between “self” and “nonself,” and when it detects a foreign entity—whether a virus, a strange bacterium or someone else’s internal organ—it mounts an attack.

One recent week, our members played such seven-letter words as “blankie,” “hirsute” and “nonself” and many more common, shorter words.

Rather it is a loss of, or seeing through, or letting go of, the delusions of self and agency, and the acceptance of impermanence, suffering and nonself.

Not long after researchers proved that plants can distinguish "self" from "nonself" roots, she tested whether they could also pick out and favor kin.

“All bacteria were clearly ‘nonself’ so simply had to be recognized and dealt with.