Perhaps the testes and ovaries are different, less vulnerable than other tissues.
They can be found in the testes of men who would normally be considered sterile.
Our analyses are showing high concentrations of DDT in the testes and ovaries of breeding birds".
Hormones from the testes, chiefly testosterone, mold the body into male form.
The principal androgen produced by the testes is testosterone.
Pheasants also accumulated extraordinary amounts of DDT in the testes — up to fifteen hundred parts per million.
A yellow compound whose effects were greatest when its color was brightest, gossypol pills suppressed fertility by damaging the testes.
She had, in fact, undergone an orchiectomy, or removal of the testes, a couple of months prior.
In one male robin, DDT was concentrated more heavily in the testes than in any other part of the body.
The testes then produce testosterone, which issues a second set of developmental instructions: for a scrotal sac to develop and for the testes to descend into it, for a penis to grow, and so on.
Japanese researchers cultivated small pieces of tissue from the testes of baby mice on a gel bathed in nutrients.
