In virtually all types of tissue in every animal species, dioxin induces the production of enzymes that are the organism's attempt to metabolize, or render harmless, the chemical irritant.
that引导的定语从句是修饰enzymes的吗? 然后最后的the chemical irritant是作什么成分呢? 如果有大大能帮忙翻译一下整句就更好了~~~