happy face mascot concept of firmicutes wearing a graduation hat

alumnus bacilli bacillus bacteria bacterial bacteriologic bacteriological bacteriology bacterium cartoon cells character clostridia clostridiaceae clostridiales clostridium cute design education emoticon emotion expire expression finish firmicutes funny germ graduate graduated graduation hands happy hat icon illustration legs mascot microbe microbiologic microbiological microorganism microscopic plectridium science smart smile student style vector