Eric Walker added New understanding of antibiotic synthesis - McGill Reporter to Cyclosporin, Gramicidin and 2019-11 McGill University study on module assembly lines that build natural antibiotics

Eric Walker added Gramicidin - Wikipedia to Gramicidin

Eric Walker added New understanding of antibiotic synthesis | Newsroom - McGill University to Viomycin and Gramicidin

Eric Walker added a number of links to Gramicidin, and added Gramicidin to Ionophoric antibiotics

Eric Walker added Gramicidin to Ionophoric antibiotics, and added Ionophoric antibiotics to Specific antibiotics