Which microbial phyla have been revealed to exist in microgravity aboard the International Space Station (ISS)?

Answer

Firmicutes and Proteobacteria.

Investigations aboard the ISS revealed a diverse microbial community that included phyla such as Firmicutes and Proteobacteria existing in the microgravity environment.

Which microbial phyla have been revealed to exist in microgravity aboard the International Space Station (ISS)?
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