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Toxicology of Industrial Compounds

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Table 19.1<br />

Table 19.2<br />

C.K.ATTERWILL AND S.P.AYLWARD 269<br />

al., 1989). Increased thyroxine clearance from the circulation, followed by<br />

elevated TSH ‘drive’ and increased thyroid follicular cell growth were<br />

observed. These com pounds act rapidly within minutes—hours <strong>of</strong> in vivo<br />

drug administration and are apparently able to increase the accumulation <strong>of</strong><br />

T 4 directly in vitro by cultured rat hepatocytes (Atterwill et al., 1989; Poole<br />

et al., 1990). Phenobarbital appears to share this property in vitro

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