Microbial World
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Many kinds of bacteria (germs) called Capnocytophaga live in the mouths of dogs and cats. These germs do not make dogs or cats sick.
Rarely, Capnocytophaga germs can spread to people through bites, scratches, or close contact from a dog or cat and may cause illness, including sepsis. Most people who have contact with a dog or cat do not become sick. People with a weakened immune systems who have difficulty fighting off infections (for example, people with cancer or those taking certain medications such as steroids) are at greater risk of becoming ill.
24/01/2023
Any kind of organism has most likely evolved to eat some kind of organic substance. In addition to eating vegetables, meat, algae, insects, and germs, certain animals also consume viruses, which have just been discovered by scientists.
It is inevitable that species may mistakenly consume viruses because they are ubiquitous everywhere, according to a study published in the journal Proceedings of the National Academy of Sciences. John DeLong, a researcher at the University of Nebraska–Lincoln, was interested in discovering whether any bacteria actively absorbed viruses and whether such a diet could promote population growth in both the individual and the community.
“They’re made up of really good stuff: nucleic acids, a lot of nitrogen and phosphorous,” said DeLong. “Everything should want to eat them. So many things will eat anything they can get ahold of. Surely something would have learned how to eat these really good raw materials.”
According to a New Atlas story, DeLong and his team tested the notion by taking samples of pond water, extracting various microbes, and then introducing a significant amount of chlorovirus, a freshwater inhabitant that infects green algae. Over the next few days, the scientists kept an eye on the numbers of the various bacteria and viruses to check if the latter were consuming the former.
In fact, a particular ciliate bacteria by the name of Halteria appeared to be chewing on the viruses. In water samples where the ciliates lacked access to any other food supply, Halteria populations increased by around 15 times in just two days, whereas chlorovirus concentrations decreased by 100 times. In the absence of the virus, Halteria did not develop at all in control samples.
In further studies, the team found that after labelling chlorovirus DNA with fluorescent dye, Halteria cells instantly began to shine. It was now simpler to confirm that Halteria was in fact consuming the virus.
05/12/2022
If anyone have Aspergillus niger and flavus Culture media and Microscopec Pic kindly send me..
24/11/2022
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