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They are also injected with a radioactive tracer attached to the enzyme aromatase or estrogen synthase, which is meant for estrogen synthesis

Some studies have reported lower testosterone levels among nicotine users, while others found that nicotine consumption correlates with higher testosterone concentrations

Figure 7 Analysis of differentially abundant microbial phyla in these four groups of samples revealed a significantly higher abundance of Bacteroidetes and Fusobacteria in the tumor site of OSCC samples compared to the contralateral healthy site, which can be interpreted as an inflammation-associated change in microbiome composition (Li and Ma, 2020)

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Under normal circumstances, these enzymes reside within the cells of