The<unk> ,<unk>  phenomenon, or paradoxical zone phenomenon, named after Harry<unk>  who first described it, originally referred to the paradoxically reduced antibacterial<unk>  of penicillin at high doses, though recent usage generally refers to the relative lack of efficacy of beta lactam antibacterial drugs on infections having large numbers of bacteria. The former<unk>  is paradoxical because the<unk> iveness of an antibiotic generally rises with increasing drug concentration.
Eagle effect
Baskerville effect
Hook effect
Flynn effect
Mandelbaum effect
Martha Mitchell effect
Bowditch effect
Bouba/kiki effect