CDS1 and breast cancer: H2S production in Msm–wtp–cds1 and the Msm–hsp60–cds1 lysates using the BC assay (Figure 4b) or the Unisense microsensor (Figure 4c) was more rapid and robust than in Msm containing the empty vector (Msm-pMV261), suggesting overproduction of Cds1 as observed in Figure 4a.