“…The primary target of aniline insult in rats appears to be the hemopoietic system, and injury is characterized by methemoglobinemia, hemolysis, and hemolytic anemia (Harrison & Jollow, 1986;Kim & Carlson, 1986;Khan et al, 1993Khan et al, , 1995 and by the development of hyperplasia, siderosis, and a variety of sarcomas of the spleen on prolonged exposure (Bus & Popp, 1987). Many of the characteristics of splenic toxicity in rats such as splenomegaly, hyperplasia, hyperpigmentation, and/or formation of highly malignant tumors (e.g., fibrosarcomas) are not restricted to aniline but also occur when animals are fed with substituted anilines such as o-toluidine (Goodman et al, 1984), chloroaniline (Ward et al, 1980;Chhabra et al, 1990), p-nitroaniline (Nair et al, 1990), 4,4'-sulfonyldianiline (Goodman et al, 1984), D&C red dye no. 9 (Weinberger et al, 1985) and substituted phenylurea herbicides (Wang et al, 1993).…”