AUTHOR=Ikewaki Nobunao , Ichiyama Koji , Senthilkumar Rajappa , Preethy Senthilkumar , Abraham Samuel J. K. TITLE=Modulation of neutrophil-to-lymphocyte ratio and gut microbiome balance in astronauts: potential benefits of novel beta-glucans during space missions JOURNAL=Frontiers in Immunology VOLUME=16 YEAR=2025 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2025.1538147 DOI=10.3389/fimmu.2025.1538147 ISSN=1664-3224