Petri dish biology bacteriology bacteria bacterium bacillus streptokokken zika zika virus infection streptococcus medicine medical experiment nutrient broth virus research activities microbiology dish petri chemistry test experiment assay pharmaceutical medical liquid sample laboratory colony biotechnology chemical analysis medicine equipment scientific research science biochemistry clinical glassware background lab glass agents cells concept conditions controlled drugs experiments facility flare flu growth health care hygiene infectious measure public health results safety scientific research scientist special effects symbol technology immunology organic white blue bacteria antibiotic
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