Lactobacillus casei bacteria, coloured scanning electron micrograph (SEM). Magnification: x3000 when printed at 10 centimetres wide.

Anthrax bacteria, SEM

Streptomyces coelicoflavus bacteria. Coloured scanning electron micrograph (SEM) of Streptomyces coelicoflavus bacteria (strands) and chains of Streptococcus bacteria (round).

Oral bacteria. Coloured scanning electron micrograph (SEM) of mixed oral bacteria (Streptococcus, round) with some bacilli bacteria (rod-shaped).

Oral bacteria. Coloured scanning electron micrograph (SEM) of mixed oral bacteria (Streptococcus, round) with some bacilli bacteria (rod-shaped).

Oral bacteria. Coloured scanning electron micrograph (SEM) of mixed oral bacteria, consisting mostly of rod-shaped bacteria (bacilli) and filamentous bacteria.

Streptomyces coelicoflavus bacteria. Coloured scanning electron micrograph (SEM) of strands of Streptomyces coelicoflavus bacteria. Streptomyces coelicoflavus is a filamentous soil bacterium.

E coli bacteria, SEM

Streptomyces coelicoflavus bacteria. Coloured scanning electron micrograph (SEM) of Streptomyces coelicoflavus bacteria (strands) and chains of Streptococcus bacteria (round).

Staphylococcus bacteria, coloured scanning electron micrograph (SEM). Staphylococcus bacteria are an example of cocci (round bacteria). They form grape-like clusters.

Streptomyces coelicoflavus bacteria. Coloured scanning electron micrograph (SEM) of strands of Streptomyces coelicoflavus bacteria. Streptomyces coelicoflavus is a filamentous soil bacterium.

Staphylococcus bacteria, coloured scanning electron micrograph (SEM). Staphylococcus bacteria are an example of cocci (round bacteria). They form grape-like clusters.

Anthrax protective antigen molecule

Anthrax protective antigen molecule

Microscopic view of Anthrax.

Actinomyces viscosus bacteria. Coloured scanning electron micrograph (SEM) of strands of Actinomyces viscosus. Actinomyces viscosus is a filamentous soil bacterium, classified in the Actinobacteria.

Actinomyces viscosus bacteria. Coloured scanning electron micrograph (SEM) of strands of Actinomyces viscosus. Actinomyces viscosus is a filamentous soil bacterium, classified in the Actinobacteria.

Streptomyces coelicoflavus bacteria. Coloured scanning electron micrograph (SEM) of strands of Streptomyces coelicoflavus bacteria. Streptomyces coelicoflavus is a filamentous soil bacterium.

Staphylococcus bacteria, coloured scanning electron micrograph (SEM). Staphylococcus bacteria are an example of cocci (round bacteria). They form grape-like clusters.

Oral bacteria. Coloured scanning electron micrograph (SEM) of mixed oral bacteria (Streptococcus, round) and bacilli bacteria, with the intercellular strands being eDNA (extracellular deoxyribonucleic acid).

MRSA bacteria. Coloured scanning electron micrograph (SEM) of methicillin-resistant Staphylococcus aureus (MRSA) bacteria (round). MRSA is a Gram-positive, round (coccus) bacterium that is resistant to many commonly prescribed antibiotics.

MRSA bacteria. Coloured scanning electron micrograph (SEM) of methicillin-resistant Staphylococcus aureus (MRSA) bacteria (round). MRSA is a Gram-positive, round (coccus) bacterium that is resistant to many commonly prescribed antibiotics.

Streptococcus bacteria. Coloured scanning electron micrograph (SEM) of chains of Streptococcus bacteria with Streptomyces coelicoflavus bacteria in the background. Streptococcus bacteria are an example of cocci (round bacteria) that form chains.

Doxycycline antibiotic molecule

Anthrax bacteria, SEM