Virus infection of the blood and bone marrow is probably responsible for all forms of the disease. The viral theory of origin accounts for the protean manifestations of the condition.

[…] the word's protean expressiveness has been observed in a xeroxlore item printed in Robert Anton Wilson's Playboy's Book of Forbidden Words […]

In the intervening decades she has become a protean figure, an emblem of different things to different people, depending upon their viewpoint — a visionary, a victim, a martyr, a feminist icon, a schizophrenic, a virago, a prisoner of gender — or, perhaps, a genius, as both Plath and Hughes maintained during her lifetime.

Protean

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