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Leptothrix ochracea 1000x magnification
Photo credit: USGS

Research Summary: Arsenic Removal at the Lava Cap Mine Superfund site (Nevada City, CA) (Andrea L. Foster)

Description: Putative Leptothrix ochracea collected from site LL1 at Lava Cap Mine, Nevada Cty, CA. Phase-contrast light microscope image showing predominantly empty sheaths characteristic of L. ochracea superimposed on the corresponding epifluoresent image. Using a passive DNA stain, a few filaments of cells can be seen within the sheaths. The overall brown color of the sheath is due to iron (hydr)oxides.

	Brightly pigmented bacteria from Afican dust		Chlorella with light microscopy		Chlorella with red indicative of chlorophyll
	Chlorella with yellow indicative of lipids		Closterium		Cyclotella with light microscopy
	Cyclotella with epifluorescence		Giemsa-stained blood smear		Human liver tissue
	Leptothrix ochracea 1000x magnification		Leptothrix ochracea colonies in water
	Microbes isolated from Afican dust aerosols		Paenibacillus thiaminolyticus
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