Figure 7.
Colorectal adenocarcinoma (Caco-2) cells after 24-hour culture with 150 ng/ml phorbol 12-myristate 13-acetate (PMA) and hydroxocobalamin (0, 200, 500, 750, and 1000 pg/ml): (a) cell activity as measured by MTT; (b) nitric oxide production.
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