Which preposition to use with testicle

for Occurrences 1%

And as Peter Abelard lost his testicles for his Heloise, he will I say not venture an incision, but life itself.

of Occurrences 1%

I foresaw the time when he would bring us extraordinary things; a louse of St. Labre, a testicle of St. Origen, the coccyx of St. Antony, the parts of St. Gudule or the prepuce of Jesus Christ.

Which preposition to use with  testicle