firmicutes mascot feels happy lift up barbells during exercise

athlete bacilli bacillus bacteria bacterial bacteriologic bacteriology bacterium barbell cartoon character clostridiaceae cute diet emoticon emotion expression firmicutes fitness funny happy health healthy heart illustration imagery infect magnification mascot medical microbe microbiologic microbiological micrograph microorganism plectridium prokaryote repair scientific shigella smile sport strength strong technique techniques tetanospasmin tetanus transmission vector