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When the nematode infects an insect, P. luminescens is released into the blood stream and rapidly kills the insect host (within 48 hours) by producing toxins, such as the high molecular weight insecticidal protein complex Tca. [2] P. luminescens also produces a proteic toxin through the expression of a single gene called makes caterpillars ...
Records of bioluminescence due to bacteria have existed for thousands of years. [4] They appear in the folklore of many regions, including Scandinavia and the Indian subcontinent. Both Aristotle and Charles Darwin have described the phenomenon of the glowing oceans which is most likely due to these light-producing organisms. [4]
He records that Robert Boyle experimented on these light sources, and showed that both they and the glowworm require air for light to be produced. Harvey notes that in 1753, J. Baker identified the flagellate Noctiluca "as a luminous animal" "just visible to the naked eye", [ 6 ] and in 1854 Johann Florian Heller (1813–1871) identified ...
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ATP is quantified by measuring the light produced through its reaction with the naturally occurring firefly enzyme luciferase using a luminometer. The amount of light produced is directly proportional to the amount of ATP present in the sample. ATP tests can be used to: Control biological treatment reactors; Guide biocide dosing programs
A low-pressure mercury-vapor discharge tube floods the inside of a biosafety cabinet with shortwave UV light when not in use, killing microbes on irradiated surfaces. Ultraviolet germicidal irradiation (UVGI) is a disinfection technique employing ultraviolet (UV) light, particularly UV-C (180–280 nm), to kill or inactivate microorganisms ...
The post Wastewater tests can find mpox, study finds. Expect more bugs to be tracked that way appeared first on TheGrio. Amy Kirby, who oversees the CDC’s wastewater surveillance work, said ...
Legionella is a genus of gram-negative bacteria that can be seen using a silver stain or grown in a special media that contains cysteine, an amino acid.It is known to cause legionellosis [3] (all illnesses caused by Legionella) including a pneumonia-type illness called Legionnaires' disease and a mild flu-like illness called Pontiac fever. [3]