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. 2002 Jul 2;87(2):246–250. doi: 10.1038/sj.bjc.6600460

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Copyright © 2002 Cancer Research UK

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Porphyrin concentration in cultured CaNT cells after 3 h incubation in serum-free medium containing ALA or (A) elthyl-, propyl- or butyl-ester (B) pentyl-, hexyl-, cyclohexyl- or benzyl-ester. Data are means±s.e. (n=8).