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3 represents SDS-PAGE showing protective effect of charcoal filters on the cigratte smoke induced oxidative degradation of guinea pig lung microsomal proteins, wherein, lane 1, microsomes incubated in the absence of cigarette smoke solution

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There are two avenues toward achieving the goal of comparable measurement of perceived dependence among exclusive and poly-users: first, resort to existing measures and empirically derive their common core using quantitative methods

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