NQO1 and hepatocellular carcinoma: For example, a study reported the glucoraphanin content in the seeds of a number of Brassica cultivars [88], which is summarized in Figure 1A. Another study examined the ability of extracts of different Brassica species to induce the quinone reductase NQO1 in a Hepa 1c1c7 murine hepatoma cell line [89] (Figure 1B).