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Actinomycetes-Mycolata

Diameter:

.8-1.2 µm

Diameter:

1.0 x 1.0-2.0 µm
Actinomycetes-Mycolata cropped from 1000x Neisser (1)

Shape:

Variable

Septa:

Yes - most species Septa is visible

Sulfur Granules:

N/A

Sheath:

No

Branching:

Description

“True branching”. Almost all species in wastewater stain gram positive when healthy.

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Microthrix filament morphotype

Diameter:

.5-.8 µm

Diameter:

N/A
Microthrix

Shape:

Individual cell not visible

Septa:

Yes- but very rarely seen septa.

Sulfur Granules:

N/A

Sheath:

No

Branching:

Description

Gram positive. Often has Neisser positive granules.

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Filament Type 1863 Morphotype

Diameter:

.8-1.0 µm

Diameter:

.8-1.0 x 1.0-1.5 µm
Type 1863

Shape:

Ovals, Rods

Septa:

Yes - visible

Sulfur Granules:

N/A

Sheath:

No

Branching:

Description

Usually dispersed. “Chain of cells” appearance.

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Ryan Hennessy Wastewater Microbiology
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