“… busulfan damages spermatogenesis and sperm … 6 Alginate oligosaccharides ( AOS ), a natural product with many benefits, rescues busulfan disrupted spermatogenesis by supporting gut microbiota through an increase in ‘beneficial’ bacteria4 …, such as Desulfovibrionaceae .7 Gut microbiota from AOS dosed animals may improve spermatogenesis through benefit to the recipients gut microbes.”