c) There are combinatorial pathways that, when perturbed, can lead to a given observed toxicity, and the AC50 values for the toxicity-related pathways for a chemical will be distributed randomly through the total distribution of AC50 values, including some in the low concentration tail of that distribution.
The sensitivity, specificity, positive and negative-predictive values for the DPYD variants and toxicity are shown in Table 6.
The EC50, LOEC and NOEC values for microbial toxicity were 216, 60 and 20 mg/L, respectively.
where experimental method is the procedure used to obtain the experimental data as defined by the law; and use is that defined by the law for the toxicity value or class.
The calculated values for the sensitivity of the JRT (toxicity at the LOD) for separate PSP toxin analogues may vary over a wide range, but for complex mixtures, typical of natural samples, the range is much narrower.
Results: We examined how dose-dependent responses of zebrafish embryos exposed to flusilazole can be extrapolated, using pathway point of departure data and reverse toxicokinetics, to obtain human oral dose hazard values that are similar to published mammalian chronic toxicity values for the chemical.
PL for human health (PLHH) is based on the risk phrases on the product label, while PL for ecotoxicology (PLECO) is calculated on basis of the LC/LD/EC50 values of the active ingredients for acute toxicity to mammals, birds, fish, daphnia, algae, aquatic plants, earthworms and bees and NOEC values for chronic toxicity to fish, daphnia and earthworms.
Median lethal concentration (LC50) values for sediment toxicity are usually reported on an OC-normalized basis.
The toxicity end-points are based on the 96 h LC50 (mmol/L) values for the fathead minnow, which used for standard toxicity test described by the U.S. Environmental Protection Agency.
