Male ruffs have the ability to eliminate excess sex hormones from their bloodstream. We often associate high testosterone ...

The super enzyme was present in large quantities in ... sophisticated strategies that males have evolved to increase their reproductive success. "All males need testosterone in their testes ...

Melanie Issigonis et al. found that the enzyme AADC in reproductive niche cells helps the enzyme NRPS produce the dipeptide β-alanyl-tryptamine (BATT). Inhibition of the gene for either enzyme in ...