{"version":1,"type":"rich","provider_name":"Libsyn","provider_url":"https:\/\/www.libsyn.com","height":90,"width":600,"title":"333: When Mutualists Murder","description":"TWiM explains how a mutualistic model bacterium can become lethal in a non-symbiotic host, and engineering a kill switch into a tuberculosis vaccine for improved safety. Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin and Michele Swanson. Subscribe to TWiM (free) on Apple Podcasts, Spotify, Android, RSS, or by email. Become a patron of TWiM. Music used on TWiM is composed and performed by Ronald Jenkees and used with permission. Links for this episode  When a mutualist becomes lethal (mBio) A lasting symbiosis (Nat Rev Micro) A kill switch for BCG (Nat Micro) Engineering mycobacteria for vaccination (Nat Micro) Take the TWiM Listener survey!  Send your microbiology questions and&amp;nbsp;comments (email or recorded audio) to twim@microbe.tv ","author_name":"This Week in Microbiology","author_url":"http:\/\/www.asm.org\/twim\/","html":"<iframe title=\"Libsyn Player\" style=\"border: none\" src=\"\/\/html5-player.libsyn.com\/embed\/episode\/id\/36899440\/height\/90\/theme\/custom\/thumbnail\/yes\/direction\/forward\/render-playlist\/no\/custom-color\/a53939\/\" height=\"90\" width=\"600\" scrolling=\"no\"  allowfullscreen webkitallowfullscreen mozallowfullscreen oallowfullscreen msallowfullscreen><\/iframe>","thumbnail_url":"https:\/\/assets.libsyn.com\/secure\/item\/36899440"}