RT Book, Section A1 Costa, Lucio G. A2 Klaassen, Curtis D. SR Print(0) ID 1158501524 T1 Toxic Effects of Pesticides T2 Casarett & Doull’s Toxicology: The Basic Science of Poisons, 9th edition YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9781259863745 LK accesspharmacy.mhmedical.com/content.aspx?aid=1158501524 RD 2023/02/05 AB Pesticides can be defined as any substance or mixture of substances intended for preventing, destroying, repelling, or mitigating pests. Pests can be insects, rodents, weeds, and a host of other unwanted organisms (Ecobichon, 2001a). Thus, pesticides occupy a rather unique position among the many chemicals that we encounter daily, in that they are deliberately added to the environment for the purpose of killing or injuring some form of life. Ideally, their injurious action would be highly specific for undesirable targets; in reality, however, many pesticides are not highly selective, and are often toxic to many nontarget species, including humans. Thus, the use of pesticides must minimize the possibility of exposure of nontarget organisms to injurious quantities of these chemicals (Murphy, 1986).