There are , of course, the huddled masses, nameless, deprived of family, possessions, hope, dignity, wrapped in ragged blankets of despair, worn and punished for their very existence. And then there ...

Estrogen has an important function in swine reproduction and growth. A Pvu II restriction enzyme polymorphism has been proven to be an important genetic variation in the estrogen receptor gene (ESR) ...

Gymnogeophagus setequedas is a rare and rheophilic species of tribe Geophagini, considered endangered in Brazilian red lists. Its previously known geographical distribution range was the Paraná River ...