This micrograph was taken at 1000X total magnifcation on a brightfield microscope. The subject is unidentified coccus cells from a contaminant colony grown on nutrient agar at 30 degrees Celsius. The cells were heat-fixed to a slide and Gram stained prior to visualization.Image credit: Emily Fox

This micrograph was taken at 1000X total magnifcation on a brightfield microscope. The subject is Enterobacter aerogenes cells grown in broth culture overnight at 37 degrees Celsius. The cells were heat-fixed to a slide and Gram stained prior to visualization.Image credit: Emily Fox

This micrograph was taken at 1000X total magnifcation on a brightfield microscope. The subject is Escherichia coli cells were grown in broth culture for 48 hours at 30 degrees Celsius. The cells were heat-fixed to a slide and stained with malachite green (endospores) and safranin red (vegetative cells) prior to visualization. No endospores are seen, as E. coli does not form endospores.Image credit: Emily Fox

This micrograph was taken at 1000X total magnifcation on a brightfield microscope. The subject is Escherichia coli cells were grown in broth culture for 5 days at 30 degrees Celsius. The cells were heat-fixed to a slide and stained with malachite green (endospores) and safranin red (vegetative cells) prior to visualization. No endospores are seen, as E. coli does not form endospores.Image credit: Emily Fox

This micrograph was taken at 1000X total magnifcation on a brightfield microscope. The subject is Escherichia coli cells grown in broth culture overnight at 37 degrees Celsius. The cells were heat-fixed to a slide and Gram stained prior to visualization.Image credit: Emily Fox

This micrograph was taken at 400X total magnifcation on a brightfield microscope. The subject is Escherichia coli cells grown in broth culture overnight at 37 degrees Celsius. The cells were heat-fixed to a slide and Gram stained prior to visualization.Image credit: Emily Fox

This micrograph was taken at 1000X total magnifcation on a brightfield microscope. The subject is Escherichia coli cells and Mycobacterium smegmatis cells grown separately in broth culture at 37 degrees Celsius. The cells were heat-fixed to a slide and acid-fast stained using the Ziehl-Neelsen method prior to visualization. M. smegmatis (acid-fast) stains pink with carbol fuchsin. E.coli (non-acid-fast) stains blue with methylene blue counterstain.Image credit: Emily Fox

This micrograph was taken at 1000X total magnifcation on a brightfield microscope. The subject is Escherichia coli cells and Mycobacterium smegmatis cells grown separately in broth culture at 37 degrees Celsius. The cells were heat-fixed to a slide and acid-fast stained using the Ziehl-Neelsen method prior to visualization. M. smegmatis (acid-fast) stains pink with carbol fuchsin. E.coli (non-acid-fast) stains blue with methylene blue counterstain.Image credit: Emily Fox

This micrograph was taken at 1000X total magnifcation on a brightfield microscope. The subject is Neisseria sicca cells and Mycobacterium phlei cells grown separately in broth culture at 37 degrees Celsius. The cells were heat-fixed to a slide and acid-fast stained using the Ziehl-Neelsen method prior to visualization. M. smegmatis (acid-fast) stains pink with carbol fuchsin. N. sicca (non-acid-fast) stains blue with methylene blue counterstain.Image credit: Emily Fox

This micrograph was taken at 1000X total magnifcation on a brightfield microscope. The subject is Escherichia coli cells grown in broth culture overnight at 37 degrees Celsius. The cells were heat-fixed to a slide and stained for 1 minute with methylene blue stain prior to visualization.Image credit: Emily Fox

This micrograph was taken at 100X total magnifcation on a brightfield microscope. The subject is Escherichia coli cells grown in broth culture overnight at 37 degrees Celsius. The cells were heat-fixed to a slide and stained for 1 minute with methylene blue stain prior to visualization.Image credit: Emily Fox

This micrograph was taken at 400X total magnifcation on a brightfield microscope. The subject is Escherichia coli cells grown in broth culture overnight at 37 degrees Celsius. The cells were heat-fixed to a slide and stained for 1 minute with methylene blue stain prior to visualization.Image credit: Emily Fox

This micrograph was taken at 1000X total magnifcation on a brightfield microscope. The subject is Escherichia coli cells grown in broth culture overnight at 37 degrees Celsius. The cells were  stained in a smear of nigrosin negative stain prior to visualization.Image credit: Emily Fox

This micrograph was taken at 400X total magnifcation on a brightfield microscope. The subject is Escherichia coli cells grown in broth culture overnight at 37 degrees Celsius. The cells were  stained in a smear of nigrosin negative stain prior to visualization.Image credit: Emily Fox

This micrograph was taken at 1000X total magnifcation on a brightfield microscope. The subject is Escherichia coli cells grown in broth culture overnight at 37 degrees Celsius. The cells were heat-fixed to a slide and stained for 1 minute with safranin red stain prior to visualization.Image credit: Emily Fox

This micrograph was taken at 100X total magnifcation on a brightfield microscope. The subject is Escherichia coli cells grown in broth culture overnight at 37 degrees Celsius. The cells were heat-fixed to a slide and stained for 1 minute with safranin red stain prior to visualization.Image credit: Emily Fox

This micrograph was taken at 400X total magnifcation on a brightfield microscope. The subject is Escherichia coli cells grown in broth culture overnight at 37 degrees Celsius. The cells were heat-fixed to a slide and stained for 1 minute with safranin red stain prior to visualization.Image credit: Emily Fox

This micrograph was taken at 400X total magnifcation on a brightfield microscope. The subject is unstained Giardia fecal smear.Image credit: Emily Fox

This micrograph was taken at 1000X total magnifcation on a brightfield microscope. The subject is Lactococcus lactis cells grown on agar at 37 degrees Celsius. The cells were heat-fixed to a slide and Gram stained prior to visualization.Image credit: Emily Fox

This micrograph was taken at 1000X total magnifcation on a brightfield microscope. The subject is Micrococcus cells grown on nutrient agar at 25 degrees Celsius. The cells were heat-fixed to a slide and Gram stained prior to visualization.Image credit: Emily Fox