Taojun Wang

1. Introduction Construction solid waste refers to the waste generated by urban construction, infrastructure development, land expansion, and industrial production. With rapid economic growth and urbanization over the past decades, the accumulated production of construction solid waste in China exceeded 3 billion tons by the end of 2020, with residue soil accounting for 30% to 40% of the total [1].

Abstract A growing body of literature implicates host-associated microbiota in the modulation of circulating androgen levels in the host, which could have far-reaching implications for androgen-mediated diseases. However, the microbial genetic pathways involved in androgen production remain unknown. Here, we report the first host-associated microbial gene (desF) encoding an enzyme that catalyzes conversion of androstenedione to epitestosterone (epiT) in the gut bacterium, Clostridium scindens.

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