Microbiology Laboratory Terminology
Gram positive cocci in groups or clusters - Staphylococcus species
Gram positive cocci in chains - Streptococcus species or Enterococcus species
Gram positive diplococci - Streptococcus pneumoniae
Gram positive bacilli producing spores - Bacillus species
Gram positive bacilli not producing spores - Listeria monocytogenes, Corynbacterium species, Lactobacillus species, Nocardia
Anaerobic Gram positive bacilli producing spores - Clostridium species
Anaerobic Gram positive bacilli not producing spores - Propionibacterium, Actinomyces
Anaerobic Gram positive cocci - Peptostreptococcus
Lactose fermenting Gram negative bacilli - Enterobacteriaceae
Non-lactose fermenting Gram negative bacilli - non-Enterobacteriaceae
Non-lactose fermenting, oxidase negative Gram negative bacilli - Stenotrophomonas maltophilia
Non-lactose fermenting, oxidase negative Gram negative coccobacilli - Acinetobacter species or Haemophilus species
Non-lactose fermenting, oxidase positive Gram negative bacilli - Pseudomonas species
Branching Gram positive rods, modified acid fast stain positive - Actinomyces species or Nocardia species
Acid fast bacilli - Mycobacterium species
Budding yeast - Candida species or Cryptococcus species
Germ tube positive yeast - Candida albicans or Candida dublinesis
Germ tube negative yeast - Candida glabrata, Candida tropicalis, Candida parapsilosis, Candida krusei
Fungal elements or hyphal elements - mold
