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[7] [8] In addition, novel bacterial products (surfactants from Pseudomonas) can directly kill the external stages of the parasite without harming the host. [9] Ichthyophthirius multifiliis inflicts considerable damage to gills and skin in two ways. Firstly, the theronts penetrate the host epithelia and, when the number of parasites is high in ...
The D-value at an unknown temperature can be calculated knowing the D-value at a given temperature provided the Z-value is known. The target of reduction in canning is the 12- D reduction of C. botulinum, which means that processing time will reduce the amount of this bacteria by a factor of 10 12 .
Cryptocaryon irritans is a species of ciliates that parasitizes marine fish, causing marine white spot disease or marine ich (pronounced ick). [ 1 ] [ 2 ] It is one of the most common causes of disease in marine aquaria .
The popularity of such raw fish dishes makes it important for consumers to be aware of this risk. Raw fish should be frozen to an internal temperature of −20 °C (−4 °F) for at least seven days to kill parasites. It is important to be aware that home freezers may not be cold enough to kill parasites. [67] [68]
Other complications can include premature birth, infection, problems with body temperature, and dehydration. [4] [5] The condition is the most severe form of ichthyosis (except for syndromes that include ichthyosis, for example, Neu–Laxova syndrome), a group of genetic disorders characterised by scaly skin. [8]
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If you've had some cold weather recently, today's look back at history should make you shiver a little less. From Feb. 2-4, 1996, 29 years ago, a frigid arctic outbreak gripped the upper Midwest.
Dairy cows across the country are infected by the H5N1 bird flu. The virus isn’t spreading among people, but scientists are on guard for changes in the strain currently circulating in cattle.