3886135 EC50s copper causing 50% reduction of reproduction 1 3886134 EC50s effect concentrations resulting in 50% reduction in reproduction 1 3886133 EC50s Effective concentrations causing 50% of response 1 3886137 EC50s effective concentrations immobilizing 50% of daphnids 1 3886136 EC50s effective concentrations inhibiting radial growth by 50 1 3886132 EC50s effective concentrations reducing the algal growth by 50 1 3886131 EC50s effective concentrations that caused 50% inhibition of SMP activity 1 3886127 EC50s effective concentrations where there was a 50% reduction in yield 1 3886129 EC50s effective drug concentrations that reduced by 50 1 3886128 EC50s exonuclease domain mutants were tested for their 50% inhibitory concentrations 1 3886130 EC50s lowest-observed-effect concentrations and concentrations causing 50% effects 1