a cartoon icon of firmicutes with a exclamation sign board

bacilli bacillus bacteria bacterial bacteriologic bacteriology bacterium board bring cartoon caution character clostridiaceae clue cute emoticon emotion expression firmicutes forewarning funny happy heart illustration imagery infect magnification mark mascot medical microbe microbiologic microbiological micrograph microorganism plectridium prokaryote scientific shigella sign smile symbol technique techniques tetanospasmin tetanus transmission vector warning