PSYCHOLOGY: You Did It, It Did It

We did it. You can too.

It shouldn't have happened, but it did.

The Hippi did it

and colleagues have identified a protein called Hippi as one possible mediator of Huntington disease (HD) neuronal cell death. HD begins with expansion of the polyglutamine repeats in the huntingtin protein (Htt). This frees up Hip1 protein, which normally binds to Htt. Free Hip1 can then bind to the Hippi protein identified by Nicholson, and the two proteins join in a complex with procaspase 8...

Penis captivus--did it occur?

The symptom of penis captivus during sexual intercourse has had a largely hearsay existence in medical history, and rumour has embellished the drama of its occurrence. It is not entirely mythical, however. It seems to have been a symptom of great rarity in former times and to have vanished perhaps completely in this century.

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